My son wants to drop scouts..

Editing the add!!; we've made the decision to drop scouts for multiple reason. How do we go about actually leaving and when is the best time?

Editing again to add!!; I'm wasn't trying to sound stupid with this. It seemed pretty formal to join, and I didn't know if there was a process to leaving. The people we've met along the way have been nothing short of amazing. I don't want to disappoint any of them but my son decided he's not finding joy in it anymore. I don't want to force him to stick with it if it doesn't make him happy.

I've let him choose whatever he wants to do for activities to help him find his joy in life. He did love the scouts but has expressed he doesn't want to continue after he graduates to the next level. How do we go about dropping out?