I have the Beta Xcode 15 (since I'm checking some ios 17 functionality) but since my mac only has 250Gb storage, I need to now delete Xcode 14.3 . I'm missing or somehow cannot find the obvious pointers to documentation that helps me understand how to remove the 14.3 version and keep the beta.

I'm not a "coder", but I use xcode, and normally I can connect any iphone and manage app installations, but iphone 13 mini has 16.4 and my xcode version (I'm on Monterey do I need to upgrade again already?) 14.2 is unhappy with this phone. I see all sorts of external sites telling me to modify files using non apple repos on github and that sounds just plain wrong. How do I find the Xcode SDK manager user interface or how to start using the xcselect tool?