Can I schedule chillers as On/Off?

Hello, I would like to know if I can schedule chillers as on or off. My model has more than one chiller and they do not always on. I need to turn them off sometimes but, not the same time. Can I schedule like this?
A schedule in Plant loop: control tab as a image attached. Is that the chiller schedule? or it is a schedule of all system. If it is all system, what will it turn off when the schedule is off? Thank you for your answer