diff --git a/Hardware/3rdparty/bugui b/Hardware/3rdparty/bugui
index 08fcc66..9a0bded 160000
--- a/Hardware/3rdparty/bugui
+++ b/Hardware/3rdparty/bugui
@@ -1 +1 @@
-Subproject commit 08fcc660909bfb688156904cf520d150e3b426f6
+Subproject commit 9a0bded62d9632d05fac99988a8c53bb5e42b7a4
diff --git a/Hardware/Widgets/EventWidget.cpp b/Hardware/Widgets/EventWidget.cpp
index 41e1eb6..4e5bee0 100644
--- a/Hardware/Widgets/EventWidget.cpp
+++ b/Hardware/Widgets/EventWidget.cpp
@@ -1,28 +1,56 @@
 #include <Scenario/Document/Event/EventModel.hpp>
 
+#include "TimeSyncWidget.hpp"
+#include "StateWidget.hpp"
+#include "ScenarioWidget.hpp"
 #include "EventWidget.hpp"
 
 namespace Hardware
 {
 EventWidget::EventWidget(Scenario::EventModel& event,
+                         ScenarioWidget* scenario,
                          bugui::container_widget* parent)
-    : ScenarioComponentSpec<Scenario::EventModel>{event, parent}
-    , bugui::container_widget{parent}
-{ }
-
-int EventWidget::x() const
+    : ScenarioComponentSpec<Scenario::EventModel,
+                            bugui::container_widget>{event, scenario, parent}
 {
-  return model.date().sec();
+  Scenario::ProcessModel* scen{scenario->get_model()};
+
+  scen->states.mutable_added.connect<&EventWidget::on_state_added>(this);
+  scen->states.removed.connect<&EventWidget::on_state_removed>(this);
+
+  for(Scenario::StateModel& s : scen->states)
+    if (s.eventId() == model.id())
+      add_widget<StateWidget>(s, scenario);
+
+  set_y_height();
+  update();
 }
 
 int EventWidget::y() const
 {
-  return 0;
+  return m_y;
 }
 
 int EventWidget::height() const
 {
-  return 1;
+  return m_height;
+}
+
+void EventWidget::set_y_height()
+{
+  m_y = std::numeric_limits<int>::max();
+  m_height = std::numeric_limits<int>::lowest();
+
+  for(const auto& s : children)
+  {
+    int sy = s->y();
+    if (sy < m_y) m_y = sy;
+
+    int sh = s->height();
+    if (sh > m_height) m_height = sh;
+  }
+
+  static_cast<TimeSyncWidget*>(parent)->set_y_height();
 }
 
 void EventWidget::paint(bugui::painter& painter) const
@@ -41,14 +69,30 @@ bool EventWidget::contains(int px, int py) const
   return false;
 }
 
+void EventWidget::on_state_added(Scenario::StateModel& state)
+{
+  if (state.eventId() != model.id()) return;
+
+  add_widget<StateWidget>(state, scenario);
+
+  set_y_height();
+}
+
+void EventWidget::on_state_removed(const Scenario::StateModel& state)
+{
+  if (state.eventId() != model.id())
+    return;
+
+  remove_widget([&state]
+                (const auto& w)
+  { return static_cast<ScenarioComponent<>*>(w.get())->this_model(state); });
+
+  set_y_height();
+}
+
 void EventWidget::on_press(int x, int y, bool pressed)
 {
   qDebug() << "is inside!";
 }
 
-const Scenario::EventModel& EventWidget::get_model() const
-{
-  return model;
-}
-
 }
diff --git a/Hardware/Widgets/EventWidget.hpp b/Hardware/Widgets/EventWidget.hpp
index ec6c9ff..b0c9902 100644
--- a/Hardware/Widgets/EventWidget.hpp
+++ b/Hardware/Widgets/EventWidget.hpp
@@ -5,24 +5,29 @@
 
 namespace Hardware
 {
-struct EventWidget final : virtual bugui::container_widget
-                         , ScenarioComponentSpec<Scenario::EventModel>
-
+struct EventWidget final : ScenarioComponentSpec<Scenario::EventModel,
+                                                 bugui::container_widget>
 {
   explicit EventWidget(Scenario::EventModel& event,
+                       ScenarioWidget* scenario,
                        bugui::container_widget* parent);
 
   void paint(bugui::painter& painter) const override;
   void on_press(int x, int y, bool pressed) override;
 
-  int x() const override;
   int y() const override;
   int height() const override;
 
-  const Scenario::EventModel& get_model() const;
+  void set_y_height();
 
 protected:
   bool contains(int px, int py) const override;
+
+  void on_state_added(Scenario::StateModel& state);
+  void on_state_removed(const Scenario::StateModel& state);
+
+  int m_y;
+  int m_height;
 };
 
 } //namespace Hardware
diff --git a/Hardware/Widgets/IntervalWidget.cpp b/Hardware/Widgets/IntervalWidget.cpp
index 94a453f..2c09950 100644
--- a/Hardware/Widgets/IntervalWidget.cpp
+++ b/Hardware/Widgets/IntervalWidget.cpp
@@ -1,12 +1,14 @@
 #include <widgets/container_widget.hpp>
 
 #include "IntervalWidget.hpp"
+#include "Hardware/Widgets/ScenarioWidget.hpp"
 
 namespace Hardware
 {
 IntervalWidget::IntervalWidget(Scenario::IntervalModel& interval,
+                               ScenarioWidget* scenario,
                                bugui::container_widget* parent)
-    : ScenarioComponentSpec<Scenario::IntervalModel>{interval, parent}
+    : ScenarioComponentSpec<Scenario::IntervalModel>{interval, scenario, parent}
 { }
 
 int IntervalWidget::x() const
@@ -16,7 +18,7 @@ int IntervalWidget::x() const
 
 int IntervalWidget::y() const
 {
-  return model.heightPercentage() * parent->height();
+  return model.heightPercentage() * scenario->height();
 }
 
 int IntervalWidget::width() const
@@ -55,13 +57,8 @@ void IntervalWidget::on_double_press(int x, int y)
 
 void IntervalWidget::on_drag(int from_x, int from_y, int to_x, int to_y)
 {
-  double increment{to_y / static_cast<double>(parent->height())};
+  double increment{to_y / static_cast<double>(scenario->height())};
   model.requestHeightChange(model.heightPercentage() + increment);
 }
 
-const Scenario::IntervalModel& IntervalWidget::get_model() const
-{
-  return model;
-}
-
 } // namespace hardware
diff --git a/Hardware/Widgets/IntervalWidget.hpp b/Hardware/Widgets/IntervalWidget.hpp
index 6dcf36b..0a1ba6b 100644
--- a/Hardware/Widgets/IntervalWidget.hpp
+++ b/Hardware/Widgets/IntervalWidget.hpp
@@ -10,6 +10,7 @@ namespace Hardware
 struct IntervalWidget final : ScenarioComponentSpec<Scenario::IntervalModel>
 {
   explicit IntervalWidget(Scenario::IntervalModel& interval,
+                          ScenarioWidget* scenario,
                           bugui::container_widget* parent);
 
   void paint(bugui::painter& painter) const override;
@@ -21,8 +22,6 @@ struct IntervalWidget final : ScenarioComponentSpec<Scenario::IntervalModel>
   int y() const override;
   int width() const override;
 
-  const Scenario::IntervalModel& get_model() const;
-
 protected:
   bool contains(int px, int py) const override;
 };
diff --git a/Hardware/Widgets/ScenarioComponent.hpp b/Hardware/Widgets/ScenarioComponent.hpp
index 3c27711..1fdca86 100644
--- a/Hardware/Widgets/ScenarioComponent.hpp
+++ b/Hardware/Widgets/ScenarioComponent.hpp
@@ -1,11 +1,19 @@
 #pragma once
 
-#include "widgets/base_widget.hpp"
 #include <Process/Style/ScenarioStyle.hpp>
+#include <Scenario/Process/ScenarioModel.hpp>
 #include <Scenario/Document/Interval/IntervalModel.hpp>
 
+namespace bugui
+{
+struct base_widget;
+struct container_widget;
+}
+
 namespace Hardware
 {
+class ScenarioWidget;
+
 template <typename T = bugui::base_widget>
   requires (std::same_as<T, bugui::base_widget> ||
            std::derived_from<T, bugui::base_widget>)
@@ -17,9 +25,15 @@ struct ScenarioComponent : T
   virtual bool this_model(const Scenario::StateModel&) const { return false; };
 
 protected:
-  explicit ScenarioComponent(bugui::container_widget* parent)
+  explicit ScenarioComponent(ScenarioWidget* s,
+                             bugui::container_widget* parent)
       : T{parent}
+      , scenario{s}
+      , skin{Process::Style::instance()}
   { }
+
+  ScenarioWidget* scenario;
+  const Process::Style& skin;
 };
 
 template <typename T, typename Base = bugui::base_widget>
@@ -30,17 +44,17 @@ template <typename T, typename Base = bugui::base_widget>
 struct ScenarioComponentSpec : ScenarioComponent<Base>
 {
   bool this_model(const T& m) const override { return m.id() == model.id(); };
+  const T& get_model() const { return model; }
 
 protected:
   explicit ScenarioComponentSpec(T& m,
+                                 ScenarioWidget* scenario,
                                  bugui::container_widget* parent)
-      : ScenarioComponent<Base>{parent}
+      : ScenarioComponent<Base>{scenario, parent}
       , model{m}
-      , skin{Process::Style::instance()}
   { }
 
   T& model;
-  const Process::Style& skin;
 };
 
 } // hardware
diff --git a/Hardware/Widgets/ScenarioWidget.cpp b/Hardware/Widgets/ScenarioWidget.cpp
index d49f6c9..074a74b 100644
--- a/Hardware/Widgets/ScenarioWidget.cpp
+++ b/Hardware/Widgets/ScenarioWidget.cpp
@@ -18,13 +18,13 @@ ScenarioWidget::ScenarioWidget(Scenario::ProcessModel* scenario,
           [this] { update(); });
 
   for(Scenario::IntervalModel& i : model->intervals)
-    add_widget<IntervalWidget>(i);
+    add_widget<IntervalWidget>(i, this);
 
   model->timeSyncs.mutable_added.connect<&ScenarioWidget::on_time_sync_added>(this);
   model->timeSyncs.removed.connect<&ScenarioWidget::on_time_sync_removed>(this);
 
   for(Scenario::TimeSyncModel& t : model->timeSyncs)
-    add_widget<TimeSyncWidget>(t);
+    add_widget<TimeSyncWidget>(t, this);
 }
 
 int ScenarioWidget::x() const
@@ -47,9 +47,14 @@ int ScenarioWidget::height() const
   return bugui::base_widget::parent->height();
 }
 
+Scenario::ProcessModel *ScenarioWidget::get_model() const
+{
+  return model;
+}
+
 void ScenarioWidget::on_interval_added(Scenario::IntervalModel& interval)
 {
-  add_widget<IntervalWidget>(interval);
+  add_widget<IntervalWidget>(interval, this);
   update();
 }
 
@@ -69,8 +74,7 @@ void ScenarioWidget::on_interval_changed(const Scenario::IntervalModel&)
 
 void ScenarioWidget::on_time_sync_added(Scenario::TimeSyncModel& timeSync)
 {
-  add_widget<TimeSyncWidget>(timeSync);
-  update();
+  add_widget<TimeSyncWidget>(timeSync, this);
 }
 
 void ScenarioWidget::on_time_sync_removed(const Scenario::TimeSyncModel& timeSync)
@@ -78,8 +82,6 @@ void ScenarioWidget::on_time_sync_removed(const Scenario::TimeSyncModel& timeSyn
   remove_widget([&timeSync]
                 (const auto& w)
   { return static_cast<ScenarioComponent<>*>(w.get())->this_model(timeSync); });
-
-  update();
 }
 
 } // namespace Hardware
diff --git a/Hardware/Widgets/ScenarioWidget.hpp b/Hardware/Widgets/ScenarioWidget.hpp
index a012bca..bf7eab7 100644
--- a/Hardware/Widgets/ScenarioWidget.hpp
+++ b/Hardware/Widgets/ScenarioWidget.hpp
@@ -23,6 +23,8 @@ public:
   int width() const override;
   int height() const override;
 
+  Scenario::ProcessModel* get_model() const;
+
 private:
   void on_interval_added(Scenario::IntervalModel& interval);
   void on_interval_removed(const Scenario::IntervalModel& interval);
diff --git a/Hardware/Widgets/StateWidget.cpp b/Hardware/Widgets/StateWidget.cpp
index fcd793b..a0272df 100644
--- a/Hardware/Widgets/StateWidget.cpp
+++ b/Hardware/Widgets/StateWidget.cpp
@@ -1,22 +1,19 @@
 #include <Scenario/Document/State/StateModel.hpp>
 
 #include "StateWidget.hpp"
+#include "Hardware/Widgets/ScenarioWidget.hpp"
 
 namespace Hardware
 {
 StateWidget::StateWidget(Scenario::StateModel& state,
+                         ScenarioWidget* scenario,
                          bugui::container_widget* parent)
-    : ScenarioComponentSpec<Scenario::StateModel>{state, parent}
+    : ScenarioComponentSpec<Scenario::StateModel>{state, scenario, parent}
 { }
 
-int StateWidget::x() const
-{
-  return parent->x();
-}
-
 int StateWidget::y() const
 {
-  return model.heightPercentage() * parent->height();
+  return model.heightPercentage() * scenario->height();
 }
 
 void StateWidget::paint(bugui::painter& painter) const
@@ -51,9 +48,4 @@ void StateWidget::on_drag(int from_x, int from_y, int to_x, int to_y)
     model.setHeightPercentage(to_y / static_cast<double>(parent->height()));
 }
 
-const Scenario::StateModel& StateWidget::get_model() const
-{
-  return model;
-}
-
 }
diff --git a/Hardware/Widgets/StateWidget.hpp b/Hardware/Widgets/StateWidget.hpp
index ba9c45c..3985fca 100644
--- a/Hardware/Widgets/StateWidget.hpp
+++ b/Hardware/Widgets/StateWidget.hpp
@@ -8,6 +8,7 @@ namespace Hardware
 struct StateWidget final : ScenarioComponentSpec<Scenario::StateModel>
 {
   explicit StateWidget(Scenario::StateModel& state,
+                       ScenarioWidget* scenario,
                        bugui::container_widget* parent);
 
   void paint(bugui::painter& painter) const override;
@@ -15,11 +16,8 @@ struct StateWidget final : ScenarioComponentSpec<Scenario::StateModel>
   void on_double_press(int x, int y) override;
   void on_drag(int from_x, int from_y, int to_x, int to_y) override;
 
-  int x() const override;
   int y() const override;
 
-  const Scenario::StateModel& get_model() const;
-
 protected:
   bool contains(int px, int py) const override;
 };
diff --git a/Hardware/Widgets/TimeSyncWidget.cpp b/Hardware/Widgets/TimeSyncWidget.cpp
index 13d6ea1..c82fded 100644
--- a/Hardware/Widgets/TimeSyncWidget.cpp
+++ b/Hardware/Widgets/TimeSyncWidget.cpp
@@ -1,14 +1,26 @@
 #include <Scenario/Document/TimeSync/TimeSyncModel.hpp>
 
+#include "Hardware/Widgets/EventWidget.hpp"
+#include "ScenarioWidget.hpp"
 #include "TimeSyncWidget.hpp"
 
 namespace Hardware
 {
 TimeSyncWidget::TimeSyncWidget(Scenario::TimeSyncModel& timeSync,
+                               ScenarioWidget* scenario,
                                bugui::container_widget* parent)
     : ScenarioComponentSpec<Scenario::TimeSyncModel,
-                            bugui::container_widget>{timeSync, parent}
-{ }
+                            bugui::container_widget>{timeSync, scenario, parent}
+{
+  Scenario::ProcessModel* scen{scenario->get_model()};
+
+  scen->events.mutable_added.connect<&TimeSyncWidget::on_event_added>(this);
+  scen->events.removed.connect<&TimeSyncWidget::on_event_removed>(this);
+
+  for(Scenario::EventModel& e : scen->events)
+    if (e.timeSync() == model.id())
+      add_widget<EventWidget>(e, scenario);
+}
 
 int TimeSyncWidget::x() const
 {
@@ -17,12 +29,29 @@ int TimeSyncWidget::x() const
 
 int TimeSyncWidget::y() const
 {
-  return 0;
+  return m_y;
 }
 
 int TimeSyncWidget::height() const
 {
-  return 1;
+  return m_height;
+}
+
+void TimeSyncWidget::set_y_height()
+{
+  m_y = std::numeric_limits<int>::max();
+  m_height = std::numeric_limits<int>::lowest();
+
+  for(const auto& e : children)
+  {
+    int ey = e->y();
+    if (ey <= m_y) m_y = ey;
+
+    int eh = e->height();
+    if (eh >= m_height) m_height = eh;
+  }
+
+  update();
 }
 
 void TimeSyncWidget::paint(bugui::painter& painter) const
@@ -41,14 +70,26 @@ bool TimeSyncWidget::contains(int px, int py) const
   return false;
 }
 
+void TimeSyncWidget::on_event_added(Scenario::EventModel& event)
+{
+  if (event.timeSync() != model.id()) return;
+
+  add_widget<EventWidget>(event, scenario);
+}
+
+void TimeSyncWidget::on_event_removed(const Scenario::EventModel& event)
+{
+  if (event.timeSync() != model.id())
+    return;
+
+  remove_widget([&event]
+                (const auto& w)
+  { return static_cast<ScenarioComponent<>*>(w.get())->this_model(event); });
+}
+
 void TimeSyncWidget::on_press(int x, int y, bool pressed)
 {
   qDebug() << "is inside!";
 }
 
-const Scenario::TimeSyncModel& TimeSyncWidget::get_model() const
-{
-  return model;
-}
-
-}
+} // namespace Hardware
diff --git a/Hardware/Widgets/TimeSyncWidget.hpp b/Hardware/Widgets/TimeSyncWidget.hpp
index 4d676f8..6d92bba 100644
--- a/Hardware/Widgets/TimeSyncWidget.hpp
+++ b/Hardware/Widgets/TimeSyncWidget.hpp
@@ -10,6 +10,7 @@ struct TimeSyncWidget final : ScenarioComponentSpec<Scenario::TimeSyncModel,
                                                     bugui::container_widget>
 {
   explicit TimeSyncWidget(Scenario::TimeSyncModel& timeSync,
+                          ScenarioWidget* scenario,
                           bugui::container_widget* parent);
 
   void paint(bugui::painter& painter) const override;
@@ -19,10 +20,16 @@ struct TimeSyncWidget final : ScenarioComponentSpec<Scenario::TimeSyncModel,
   int y() const override;
   int height() const override;
 
-  const Scenario::TimeSyncModel& get_model() const;
+  void set_y_height();
 
-protected:
+private:
   bool contains(int px, int py) const override;
+
+  void on_event_added(Scenario::EventModel& event);
+  void on_event_removed(const Scenario::EventModel& event);
+
+  int m_y;
+  int m_height;
 };
 
 } //namespace Hardware