There is ATP and RMP...I can never keep track of which is which...one pays for a 3 hr period; the other for 4. Generally, 1 is used for adminstrative work and the other operational work...each unit is given a few of these to allow them to reward the top 5-10% of the unit that is really doing all the work...lol!
But OP...you posed 2 different inquiries...NOSC change of command occurring while you are already drilling? You are already getting paid/points for your time in that case...you can't get additional for that. At best it would have to occur outside the normal drill weekend day/time, and I don't know why a NOSC would do that...
For the War College event. just inform your chain, as stated above, to generate unpaid drill for the dates of the conference. The NOSC will forward you a muster sheet that you get whomever from the conference to sign off on and you submit when you return, which will automatically add the point after processing. But based on you CoC inquiry, I have to ask "How are you getting to the War College?". Are you local to that area? If not, then you must be attending on some type of orders? If it's IDTT, then you would still need the muster sheet, but if you are going under any other type, you will get points for executing them.
Hmmm...I just searched the NWC website and see it is scheduled for June 17-18th. Doesn't leave you a lot of time (my NOSC is really anal about generating or dealing with musters after the event occurs). First I've heard about these forums...learn something new everyday!