diff --git a/src/JiraTimeBot.Ui/App.xaml.cs b/src/JiraTimeBot.Ui/App.xaml.cs
index 1eb0115..cafa44d 100644
--- a/src/JiraTimeBot.Ui/App.xaml.cs
+++ b/src/JiraTimeBot.Ui/App.xaml.cs
@@ -20,20 +20,23 @@ namespace JiraTimeBot.Ui
         protected override void OnStartup(StartupEventArgs e)
         {
             var builder = new ContainerBuilder();
-            builder.Register(c => new MainWindow())
-                   .SingleInstance();
 
-            builder.Register(c => new ApplicationModel()).SingleInstance();
-            builder.Register(c => new SettingsViewModel()).SingleInstance();
+            builder.Register<MainWindow>(c =>
+            {
+                var result = new MainWindow();
+                result.DataContext = c.Resolve<ApplicationViewModel>();
+                return result;
+            }).SingleInstance();
 
-            builder.RegisterType<SettingsPage>().SingleInstance();
-            builder.RegisterType<MainPage>().SingleInstance();
+            builder.RegisterType<ApplicationModel>().SingleInstance();
 
-            builder.RegisterType<MainViewModel>().SingleInstance();
+            builder.RegisterType<ApplicationViewModel>().SingleInstance();
+            builder.RegisterType<MainPageViewModel>().SingleInstance();
             builder.RegisterType<SettingsViewModel>().SingleInstance();
-
-
-            builder.RegisterAggregateService<IRegisteredPages>();
+            
+            builder.RegisterType<MainPage>().SingleInstance();
+            builder.RegisterType<SettingsPage>().SingleInstance();
+            
             builder.RegisterAggregateService<IRegisteredViewModels>();
 
             builder.RegisterType<ApplicationNavigator>()
@@ -43,13 +46,10 @@ namespace JiraTimeBot.Ui
             _container = builder.Build();
 
             var mainWindow = _container.Resolve<MainWindow>();
-
             var nav = _container.Resolve<IApplicationNavigator>();
-            nav.NavigateToMain();
-
-            //var mainPage = _container.Resolve<MainPage>();
-            //mainWindow.Navigate(mainPage);
-            mainWindow.ShowDialog();
+            
+            nav.NavigateToSettings();
+            mainWindow.Show();
             base.OnStartup(e);
         }
     }
diff --git a/src/JiraTimeBot.Ui/ApplicationNavigator.cs b/src/JiraTimeBot.Ui/ApplicationNavigator.cs
index 2cdf01a..b350eee 100644
--- a/src/JiraTimeBot.Ui/ApplicationNavigator.cs
+++ b/src/JiraTimeBot.Ui/ApplicationNavigator.cs
@@ -4,35 +4,30 @@ namespace JiraTimeBot.Ui
 {
     public interface IRegisteredViewModels
     {
-        MainViewModel Main { get; set; }
         SettingsViewModel Settings { get; set; }
+        MainPageViewModel MainPage { get; set; }
     }
 
     public class ApplicationNavigator : IApplicationNavigator
     {
-        private readonly MainWindow _mainWindow;
-        private readonly IRegisteredPages _pages;
+        private readonly ApplicationViewModel _applicationViewModel;
         private readonly IRegisteredViewModels _viewModels;
 
-        public ApplicationNavigator(MainWindow mainWindow, 
-                                    IRegisteredPages pages, 
+        public ApplicationNavigator(ApplicationViewModel applicationViewModel, 
                                     IRegisteredViewModels viewModels)
         {
-            _mainWindow = mainWindow;
-            _pages = pages;
+            _applicationViewModel = applicationViewModel;
             _viewModels = viewModels;
         }
 
         public void NavigateToMain()
         {
-            _pages.Main.DataContext = _viewModels.Main;
-            _mainWindow.Navigate(_pages.Main);
+            _applicationViewModel.CurrentViewModel = _viewModels.MainPage;
         }
 
         public void NavigateToSettings()
         {
-            _pages.Settings.DataContext = _viewModels.Settings;
-            _mainWindow.Navigate(_pages.Settings);
+            _applicationViewModel.CurrentViewModel = _viewModels.Settings;
         }
     }
 }
\ No newline at end of file
diff --git a/src/JiraTimeBot.Ui/IRegisteredPages.cs b/src/JiraTimeBot.Ui/IRegisteredPages.cs
deleted file mode 100644
index 8d2d6cd..0000000
--- a/src/JiraTimeBot.Ui/IRegisteredPages.cs
+++ /dev/null
@@ -1,9 +0,0 @@
-namespace JiraTimeBot.Ui
-{
-    public interface IRegisteredPages
-    {
-        SettingsPage Settings { get; set; }
-
-        MainPage Main { get; set; }
-    }
-}
\ No newline at end of file
diff --git a/src/JiraTimeBot.Ui/JiraTimeBot.Ui.csproj b/src/JiraTimeBot.Ui/JiraTimeBot.Ui.csproj
index 0dc509f..952b4e3 100644
--- a/src/JiraTimeBot.Ui/JiraTimeBot.Ui.csproj
+++ b/src/JiraTimeBot.Ui/JiraTimeBot.Ui.csproj
@@ -96,10 +96,10 @@
     <Compile Include="Commands\RelayCommand.cs" />
     <Compile Include="Commands\RelayCommandAsync%27.cs" />
     <Compile Include="IApplicationNavigator.cs" />
-    <Compile Include="IRegisteredPages.cs" />
     <Compile Include="Models\ApplicationModel.cs" />
     <Compile Include="Properties\Annotations.cs" />
-    <Compile Include="ViewModels\MainViewModel.cs" />
+    <Compile Include="ViewModels\ApplicationViewModel.cs" />
+    <Compile Include="ViewModels\MainPageViewModel.cs" />
     <Compile Include="ViewModels\SettingsViewModel.cs" />
     <Compile Include="ViewModels\ViewModelBase.cs" />
     <Compile Include="Views\MainPage.xaml.cs">
diff --git a/src/JiraTimeBot.Ui/ViewModels/ApplicationViewModel.cs b/src/JiraTimeBot.Ui/ViewModels/ApplicationViewModel.cs
new file mode 100644
index 0000000..df71410
--- /dev/null
+++ b/src/JiraTimeBot.Ui/ViewModels/ApplicationViewModel.cs
@@ -0,0 +1,40 @@
+using Aeroclub.CL.ASIA.Application.UI.Wpf.Commands;
+using System;
+
+namespace JiraTimeBot.Ui.ViewModels
+{
+    public class ApplicationViewModel : ViewModelBase
+    {
+        private readonly Func<IApplicationNavigator> _appNavigator;
+        private ViewModelBase _currentViewModel;
+
+        public ApplicationViewModel(Func<IApplicationNavigator> appNavigator)
+        {
+            _appNavigator = appNavigator;
+
+            NavigateToSettings = new RelayCommand(() =>
+            {
+                _appNavigator().NavigateToSettings();
+            });
+
+            NavigateToMain = new RelayCommand(() =>
+            {
+                _appNavigator().NavigateToMain();
+            });
+        }
+
+        public ViewModelBase CurrentViewModel
+        {
+            get => _currentViewModel;
+            set
+            {
+                _currentViewModel = value;
+                OnPropertyChanged();
+            }
+        }
+
+        public RelayCommand NavigateToSettings { get; set; }
+
+        public RelayCommand NavigateToMain { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/src/JiraTimeBot.Ui/ViewModels/MainPageViewModel.cs b/src/JiraTimeBot.Ui/ViewModels/MainPageViewModel.cs
new file mode 100644
index 0000000..e89dcaf
--- /dev/null
+++ b/src/JiraTimeBot.Ui/ViewModels/MainPageViewModel.cs
@@ -0,0 +1,7 @@
+namespace JiraTimeBot.Ui.ViewModels
+{
+    public class MainPageViewModel : ViewModelBase
+    {
+        
+    }
+}
\ No newline at end of file
diff --git a/src/JiraTimeBot.Ui/ViewModels/MainViewModel.cs b/src/JiraTimeBot.Ui/ViewModels/MainViewModel.cs
deleted file mode 100644
index 2e7b7c0..0000000
--- a/src/JiraTimeBot.Ui/ViewModels/MainViewModel.cs
+++ /dev/null
@@ -1,22 +0,0 @@
-using Aeroclub.CL.ASIA.Application.UI.Wpf.Commands;
-using System;
-
-namespace JiraTimeBot.Ui.ViewModels
-{
-    public class MainViewModel : ViewModelBase
-    {
-        private readonly Func<IApplicationNavigator> _appNavigator;
-
-        public MainViewModel(Func<IApplicationNavigator> appNavigator)
-        {
-            _appNavigator = appNavigator;
-
-            NavigateToSettings = new RelayCommand(() =>
-            {
-                _appNavigator().NavigateToSettings();
-            });
-        }
-
-        public RelayCommand NavigateToSettings { get; set; }
-    }
-}
\ No newline at end of file
diff --git a/src/JiraTimeBot.Ui/Views/MainPage.xaml b/src/JiraTimeBot.Ui/Views/MainPage.xaml
index 13636d2..ec1c23c 100644
--- a/src/JiraTimeBot.Ui/Views/MainPage.xaml
+++ b/src/JiraTimeBot.Ui/Views/MainPage.xaml
@@ -1,4 +1,4 @@
-<Page x:Class="JiraTimeBot.Ui.MainPage"
+<UserControl x:Class="JiraTimeBot.Ui.MainPage"
       xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
       xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
@@ -6,16 +6,14 @@
       xmlns:local="clr-namespace:JiraTimeBot.Ui"
       xmlns:viewModels="clr-namespace:JiraTimeBot.Ui.ViewModels"
       mc:Ignorable="d" 
-      d:DesignHeight="450" d:DesignWidth="800"
-      d:DataContext="{d:DesignInstance viewModels:MainViewModel}"
-      Title="MainPage">
-
+      Height="100"
+      Width="400"
+      d:DataContext="{d:DesignInstance viewModels:MainPageViewModel}" >
     <Grid>
         <Grid.RowDefinitions>
             <RowDefinition/>
             <RowDefinition/>
         </Grid.RowDefinitions>
-        <TextBlock Text="Main"></TextBlock>
-        <Button Grid.Row="1" Command="{Binding Path=NavigateToSettings}" Content="NavToSettings" />
+        <TextBlock Text="Application"></TextBlock>
     </Grid>
-</Page>
+</UserControl>
diff --git a/src/JiraTimeBot.Ui/Views/MainPage.xaml.cs b/src/JiraTimeBot.Ui/Views/MainPage.xaml.cs
index 689f3e9..b4cb592 100644
--- a/src/JiraTimeBot.Ui/Views/MainPage.xaml.cs
+++ b/src/JiraTimeBot.Ui/Views/MainPage.xaml.cs
@@ -1,24 +1,9 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Data;
-using System.Windows.Documents;
-using System.Windows.Input;
-using System.Windows.Media;
-using System.Windows.Media.Imaging;
-using System.Windows.Navigation;
-using System.Windows.Shapes;
-
-namespace JiraTimeBot.Ui
+namespace JiraTimeBot.Ui
 {
     /// <summary>
     /// Interaction logic for MainPage.xaml
     /// </summary>
-    public partial class MainPage : Page
+    public partial class MainPage
     {
         public MainPage()
         {
diff --git a/src/JiraTimeBot.Ui/Views/MainWindow.xaml b/src/JiraTimeBot.Ui/Views/MainWindow.xaml
index 303dead..bc95dfb 100644
--- a/src/JiraTimeBot.Ui/Views/MainWindow.xaml
+++ b/src/JiraTimeBot.Ui/Views/MainWindow.xaml
@@ -1,11 +1,37 @@
-<NavigationWindow x:Class="JiraTimeBot.Ui.MainWindow"
+<Window x:Class="JiraTimeBot.Ui.MainWindow"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:viewModels="clr-namespace:JiraTimeBot.Ui.ViewModels"
+        xmlns:ui="clr-namespace:JiraTimeBot.Ui"
         mc:Ignorable="d"
-        ShowsNavigationUI="False"
-        Height="Auto"
-        Width="Auto"
-        Title="MainWindow">
-</NavigationWindow>
+        SizeToContent="WidthAndHeight"
+        d:DataContext="{d:DesignInstance viewModels:ApplicationViewModel}"
+        Title="ApplicationWindow">
+    <Window.Resources>
+        <DataTemplate DataType="{x:Type viewModels:MainPageViewModel}">
+            <ui:MainPage/>
+        </DataTemplate>
+        <DataTemplate DataType="{x:Type viewModels:SettingsViewModel}">
+            <ui:SettingsPage/>
+        </DataTemplate>
+    </Window.Resources>
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition />
+            <RowDefinition />
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition />
+            <ColumnDefinition />
+        </Grid.ColumnDefinitions>
+        <Button Grid.Row="0" Grid.Column="0"
+            Content="NavToMain" Command="{Binding Path=NavigateToMain}" />
+        <Button Grid.Row="0" Grid.Column="1"
+            Content="NavToSettings" Command="{Binding Path=NavigateToSettings}" />
+        <ContentControl  Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2" 
+                         Content="{Binding Path=CurrentViewModel}" />
+    </Grid>
+    
+</Window>
diff --git a/src/JiraTimeBot.Ui/Views/MainWindow.xaml.cs b/src/JiraTimeBot.Ui/Views/MainWindow.xaml.cs
index 11cc074..97812cb 100644
--- a/src/JiraTimeBot.Ui/Views/MainWindow.xaml.cs
+++ b/src/JiraTimeBot.Ui/Views/MainWindow.xaml.cs
@@ -5,6 +5,8 @@
     /// </summary>
     public partial class MainWindow
     {
+
+
         public MainWindow()
         {
             InitializeComponent();
diff --git a/src/JiraTimeBot.Ui/Views/Settings.xaml b/src/JiraTimeBot.Ui/Views/Settings.xaml
index dbbe7e5..24fda2b 100644
--- a/src/JiraTimeBot.Ui/Views/Settings.xaml
+++ b/src/JiraTimeBot.Ui/Views/Settings.xaml
@@ -5,7 +5,8 @@
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
              xmlns:local="clr-namespace:JiraTimeBot.Ui"
              mc:Ignorable="d" 
-             d:DesignHeight="450" d:DesignWidth="800">
+             Width="100"
+             Height="200">
     <Grid>
             
     </Grid>
diff --git a/src/JiraTimeBot.Ui/Views/SettingsPage.xaml b/src/JiraTimeBot.Ui/Views/SettingsPage.xaml
index 5230cef..7ef4124 100644
--- a/src/JiraTimeBot.Ui/Views/SettingsPage.xaml
+++ b/src/JiraTimeBot.Ui/Views/SettingsPage.xaml
@@ -1,4 +1,4 @@
-<Page x:Class="JiraTimeBot.Ui.SettingsPage"
+<UserControl x:Class="JiraTimeBot.Ui.SettingsPage"
       xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
       xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
@@ -6,9 +6,9 @@
       xmlns:local="clr-namespace:JiraTimeBot.Ui"
       mc:Ignorable="d" 
       d:DesignHeight="450" d:DesignWidth="800"
-      Title="SettingsPage">
+      >
 
     <Grid>
         <TextBlock Text="Settings"></TextBlock>
     </Grid>
-</Page>
+</UserControl>
diff --git a/src/JiraTimeBot.Ui/Views/SettingsPage.xaml.cs b/src/JiraTimeBot.Ui/Views/SettingsPage.xaml.cs
index be29dfd..dd3b62a 100644
--- a/src/JiraTimeBot.Ui/Views/SettingsPage.xaml.cs
+++ b/src/JiraTimeBot.Ui/Views/SettingsPage.xaml.cs
@@ -1,11 +1,9 @@
-using System.Windows.Controls;
-
-namespace JiraTimeBot.Ui
+namespace JiraTimeBot.Ui
 {
     /// <summary>
     /// Interaction logic for SettingsPage.xaml
     /// </summary>
-    public partial class SettingsPage : Page
+    public partial class SettingsPage
     {
         public SettingsPage()
         {