diff --git a/Presence.Api/Controllers/GroupController.cs b/Presence.Api/Controllers/GroupController.cs
index f692ba0..142f999 100644
--- a/Presence.Api/Controllers/GroupController.cs
+++ b/Presence.Api/Controllers/GroupController.cs
@@ -1,5 +1,7 @@
 using domain.Service;
 using domain.UseCase;
+using domain.Request;
+using domain.Service;
 using Microsoft.AspNetCore.Mvc;
 using Presence.Api.Response;
 
@@ -31,6 +33,13 @@ namespace Presence.Api.Controllers
                     }).ToList(),
                 }).ToList();
             return Ok(new GroupResponse());
-        } 
+        }
+
+        [HttpPost("/admin/{groupId}/students")]
+        public void AddGroup(int groupId, [FromBody] AddGroupRequest addGroupRequest)
+        {
+            Console.WriteLine(groupId);
+            _groupService.AddGroup(addGroupRequest);
+        }
     }
 }
diff --git a/Presence.Desktop/ViewModels/GroupViewModel.cs b/Presence.Desktop/ViewModels/GroupViewModel.cs
index 6a27cc7..3522b81 100644
--- a/Presence.Desktop/ViewModels/GroupViewModel.cs
+++ b/Presence.Desktop/ViewModels/GroupViewModel.cs
@@ -1,6 +1,4 @@
 using domain.UseCase;
-using DynamicData;
-using DynamicData.Binding;
 using Presence.Desktop.Models;
 using ReactiveUI;
 using System;
@@ -8,12 +6,23 @@ using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Linq;
 using System.Reactive.Linq;
-using Tmds.DBus.Protocol;
+using System.Threading.Tasks;
+using System.Windows.Input;
 
 namespace Presence.Desktop.ViewModels
 {
     public class GroupViewModel : ViewModelBase, IRoutableViewModel
     {
+        public ICommand OpenFileDialog { get; }
+        public Interaction<string?, string?> SelectFileInteraction => _SelectFileInteraction;
+        public readonly Interaction<string?, string?> _SelectFileInteraction;
+        private string? _selectedFile;
+        public string? SelectedFile
+        {
+            get => _selectedFile;
+            set => this.RaiseAndSetIfChanged(ref _selectedFile, value);
+        }
+
         private readonly List<GroupPresenter> _groupPresentersDataSource = new List<GroupPresenter>();
         private ObservableCollection<GroupPresenter> _groups;
         public ObservableCollection<GroupPresenter> Groups => _groups;
@@ -27,12 +36,40 @@ namespace Presence.Desktop.ViewModels
         private GroupPresenter? _selectedGroupItem;
 
 
-
+        private IGroupUseCase _groupUseCase;
         public ObservableCollection<UserPresenter> Users { get => _users; }
         public ObservableCollection<UserPresenter> _users;
         public GroupViewModel(IGroupUseCase groupUseCase)
         {
-            foreach (var item in groupUseCase.GetGroupsWithStudents())
+            _groupUseCase = groupUseCase;
+            _SelectFileInteraction = new Interaction<string?, string?>();
+            OpenFileDialog = ReactiveCommand.CreateFromTask(SelectFile);
+            _users = new ObservableCollection<UserPresenter>();
+            RefreshGroups();
+            this.WhenAnyValue(vm => vm.SelectedGroupItem)
+                .Subscribe(_ =>
+                {
+                    RefreshGroups();
+                    SetUsers();
+                });
+        }
+
+        private void SetUsers()
+        {
+            if (SelectedGroupItem == null) return;
+            Users.Clear();
+            var group = _groups.First(it => it.Id == SelectedGroupItem.Id);
+            if (group.users == null) return;
+            foreach (var item in group.users)
+            {
+                Users.Add(item);
+            }
+        }
+
+        private void RefreshGroups()
+        {
+            _groupPresentersDataSource.Clear();
+            foreach (var item in _groupUseCase.GetGroupsWithStudents())
             {
                 GroupPresenter groupPresenter = new GroupPresenter
                 {
@@ -49,26 +86,15 @@ namespace Presence.Desktop.ViewModels
                 _groupPresentersDataSource.Add(groupPresenter);
             }
             _groups = new ObservableCollection<GroupPresenter>(_groupPresentersDataSource);
-
-            _users = new ObservableCollection<UserPresenter>();
-
-            this.WhenAnyValue(vm => vm.SelectedGroupItem)
-                .Subscribe(_ => SetUsers());
-
         }
 
-        private void SetUsers()
+        private async Task SelectFile()
         {
-            if (SelectedGroupItem == null) return;
-            if (SelectedGroupItem.users == null) return;
-            Users.Clear();
-            foreach (var item in SelectedGroupItem.users)
-            {
-                Users.Add(item);
-            }
+            Console.WriteLine("clock");
+            SelectedFile = await _SelectFileInteraction.Handle("Chose csv file");
         }
-
         public string? UrlPathSegment { get; }
         public IScreen HostScreen { get; }
     }
 }
+
diff --git a/Presence.Desktop/Views/GroupView.axaml b/Presence.Desktop/Views/GroupView.axaml
index 6789a99..d1aed66 100644
--- a/Presence.Desktop/Views/GroupView.axaml
+++ b/Presence.Desktop/Views/GroupView.axaml
@@ -4,7 +4,7 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
 		xmlns:vm="using:Presence.Desktop.ViewModels"
         mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
-        x:Class="Presence.Desktop.GroupView"
+        x:Class="Presence.Desktop.Views.GroupView"
 		x:DataType="vm:GroupViewModel">
 
 	<Design.DataContext>
@@ -27,7 +27,7 @@
 					</DataTemplate>
 				</ComboBox.ItemTemplate>
 			</ComboBox>
-			<ComboBox/>
+			<Button  Width="100" Command="{Binding OpenFileDialog}"/>
 			<ComboBox/>
 		</StackPanel>
 		<Border>
diff --git a/Presence.Desktop/Views/GroupView.axaml.cs b/Presence.Desktop/Views/GroupView.axaml.cs
index 808d538..85f8d5b 100644
--- a/Presence.Desktop/Views/GroupView.axaml.cs
+++ b/Presence.Desktop/Views/GroupView.axaml.cs
@@ -1,17 +1,37 @@
-using Avalonia;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
 using Avalonia.Controls;
 using Avalonia.Markup.Xaml;
+using Avalonia.Platform.Storage;
 using Avalonia.ReactiveUI;
 using Presence.Desktop.ViewModels;
 using ReactiveUI;
 
-namespace Presence.Desktop;
-
-public partial class GroupView : ReactiveUserControl<GroupViewModel>
+namespace Presence.Desktop.Views
 {
-    public GroupView()
+    public partial class GroupView : ReactiveUserControl<GroupViewModel>
     {
-        this.WhenActivated(disposables => { });
-        AvaloniaXamlLoader.Load(this);
+        public GroupView()
+        {
+            this.WhenActivated(action =>
+            {
+                action(ViewModel!.SelectFileInteraction.RegisterHandler(ShowFileDialog));
+            });
+            AvaloniaXamlLoader.Load(this);
+        }
+
+        private async Task ShowFileDialog(IInteractionContext<string?, string?> context)
+        {
+            var topLevel = TopLevel.GetTopLevel(this);
+            var storageFile = await topLevel.StorageProvider.OpenFilePickerAsync(
+                new FilePickerOpenOptions()
+                {
+                    AllowMultiple = false,
+                    Title = context.Input
+                }
+            );
+            context.SetOutput(storageFile.First().Path.ToString());
+        }
     }
 }
\ No newline at end of file