Got a model to populate a grouping creator

OpenArchival.Blazor/Components/Pages/Administration/ArchiveItems/AddGroupingDialog.razor

@@ -1,6 +1,6 @@
 <MudDialog>
     <TitleContent>
-        <MudText Typo="Typo.h6">Create a Category</MudText>
+        <MudText Typo="Typo.h6">Edit a Category</MudText>
     </TitleContent>
 
     <DialogContent>
@@ -17,16 +17,19 @@
     [Parameter]
     public required ArtifactGroupingValidationModel Model { get; set; }
 
+    [CascadingParameter]
+    IMudDialogInstance MudDialog { get; set; }
+
     [Parameter]
     public bool IsUpdate { get; set; } = false;
 
 
     private void OnCancel(MouseEventArgs args)
     {
-        throw new NotImplementedException();
+        MudDialog.Cancel();
     }
     private void OnSubmit(MouseEventArgs args)
     {
-        throw new NotImplementedException();
+        MudDialog.Close(DialogResult.Ok(Model));
     }
 }