GUI Editor is a resource designed to allow creation and manipulation of GUI elements in-game, with the ability to generate the corresponding Lua code and output it to a file.
To begin using the GUI Editor, start the resource and press shift + g (or type /guied).
There is an in-game tutorial that can be used to familiarise you with the basic functions of the GUI Editor
For further help, there is also extensive help documentation that can be accessed with the main right click menu
The editor requires the ACL permissions: general.ModifyOtherObjects for some functions, and function.callRemote for update checking