I am in the process of locking down some permissions for a custom role that was added through the Sitefinity UI. I cannot find where I would prevent this role from being able to edit and create widget templates.
Let me elaborate further on this. I did find where I can disable the admin menu from showing "Design -> Widget Templates", but I am still able to click edit on say a news widget and then under the list settings I can still click either edit or create new for the the template.
Under "Permissions -> Widget templates" I have removed all references to this custom role and I have even gone as far as setting administrator only to all create/edit/delete options and recycled the application a few times.