custom editor user settings and .ini hell

I want to automatically open an EUW on editor start but I want it to affect only those who choose to (not whole team). I need to add this to .ini file:

[/Script/Blutility.EditorUtilitySubsystem]
StartupObjects=/path_from_Content/EUW_name.EUW_name

But I don’t know to which ini file. If I’d add it to Project/Config/<platform>/DefaultEditorPerProjectUserSettings.ini it would affect everyone on the team. Tried adding it in those files but it doesn’t work (doesn’t open the widget):

  • Saved\Config\WindowsEditor\EditorPerProjectUserSettings.ini

  • Saved\Config\WindowsEditor\EditorPerProjectUserSettingsLocal.ini

  • Saved\Config\WindowsEditor\Editor.ini

Help…