Support staff work includes registering students, maintaining equipment in labs, etc.. If you are asked to do any support staff work or if you are reprimanded in any way for anything you do or do not do in respect of the strike, contact the union right away for assistance ( opseu558@gmail.com or 416.694.2575).
If there is support staff work that is needed, or there is something broken that prevents you from doing your faculty work, report the situation to your manager. He or she will have to sort that out and find a way to do that work.