1, add an new ui panel type which refer to an ui panle category onto UIHandler.cs 2, set the uiscenedefault.txt 3, set the uilayerpanel.txt 4, create a binder script 5, create a handler script which is partical class. 6, make a prefab with the UIHolder component addon, then put it under a Resources folder.

- run the entry.unity and you will see the ui panels made just now.