How to make scene change/management?

I mean, I want to develop a system that contains several scenes, and they can be changed by e.g. pressing a button.

Is there any samples for scene change / scene management?

Maybe take a look at this addon: https://github.com/danomatika/ofxAppUtils, specifically ofxScene. It comes with some example code to get you started and is something you could easily build on to make something a bit more sophisticated.

Thanks a lot, I’ll take a look at it.