2 things I need help with (cubemap problem is fixed)

1. Instantly respawning sentries that shoot enemies, and can be sapped. Can't find anything on how to do this on Valve Developer Community.

2. Capturable Control Points that can be captured, and after a set time, turn back to neutral, to be captured again.

I've already fixed the cubemap problem without even trying, so these are the last 2 things on my list that I need help with.

Thanks will be given to anyone who helps.