Ui Manager
The UI Manager window lets you install and remove user interfaces that can be accessed on the tablet or mobile app.
Add: Opens a dialog window for you to select a UI on your pc to add into the library. Adding a UI to the library makes a copy of the ui file you selected, any changes made to the original will not show.
Delete: Removes the UI from the library and delete the ui file.
To make changes in a UI you need to edit the on in the library or remove the old and add the one you changed.