Y'know how there are daytime & nighttime counts? The number of agent managers will change at that time.
Barry's also right -- assuming you have Admin access to the server you can start new Agent Manager tasks in real time. Stopping is more disruptive, but again, the Amgr count will be modified at the end of the "shift".
Feedback response number WEBBATSKEW created by Mike Woolsey on 12/06/2017