How to edit Scrolling Frame Graphical User Interface?

I cant scroll when editing on Studio. How do you scroll so that I would be anle to insert more GUI in the scrolling frame?

I know this isnt about a scripting problem but please do answer

There is a simple way that I use to fix that problem, get into studio and enter as "test", so u can play the game in studio. Then go into Players-playergui-The gui you want- The Scrolling frame and edit everithing you need or want to, once youre done just right click the guy and copy it and done, all you have to do now it is to paste the gui into your game