I can't explode or make group in sketchup

why i cant explode or make grup in sketchup

well I’m gonna guess you selected something that doesn’t let you explode
or that you’re already in another action.

but really, without having a file and a more precise description of what’s going on, it’s hard to have anything but guesses.

what did you select ? what does the entity info tells you right now ? do you have a specific tool at hand or just the selection ? stuff like that.

What version of SketchUp are you really using? SketchUp for Schools is a web based version for young school children and does not look like what you show in your screenshot. It also doesn’t look like SketchUp 2023. The grayed menu items look like something that would sometimes happen in an older version of SketchUp.