Edit default widget content (Sub-Groups widget)

Hi

I have to update "Sub-Groups" at the left administrate tab

I found that widget in the filestorage folder:

filestorage/defaultwidgets/2be81192090d4ceebe3a46d6e23b999a

but can't find it in Widget Studio.

I tried soultion https://community.telligent.com/community/11/w/developer-training/65065/widget-extensions
but in logs recive exception 
Multiple factory default scripted content fragment providers were detected with the same identifier: Telligent.Evolution.Api.Plugins.Administration.SubGroupsContainerPanel, Telligent.Evolution.Platform, verint_test_extension.CustomSubGroupsContainerPanel, verint_test_extension

Also I found next code in Telligent.Evolution.Api.Plugins.Administration.SubGroupsContainerPanel

public void Register(IScriptedContentFragmentController controller)
{
  this._widgetController = controller;
  ScriptedContentFragmentOptions options = new ScriptedContentFragmentOptions(this.FrontUiWidget)
  {
    IsEditable = false,
    CanBeThemeVersioned = false,
    CanHaveHeader = false,
    CanHaveWrapperCss = false,
    CanReadPluginConfiguration = false
  };
  options.Extensions.Add((IContextualScriptedContentFragmentExtension) new SubGroupsContainerPanel.PanelContext());
  controller.Register(options);
}

Looks like widget marked as unEditable.

Can someone suggest how can I edit it?