As we switch from quarters to trimesters, there have been reported instances of glitches as you change your categories from Quarter to Trimester. Before you change ANYTHING in your assignments tab, please make sure that you take a screenshot of your grades to back them up. If anything happens to your gradebook once you make the switch then you can reenter your grades. Best case you don't need it. But worst case you have it. PLEASE make sure you follow these directions and screenshot before you do anything. And share it with your coworkers so we can be sure that everyone is ok before making the switch.
I had a teacher ask me if there was a way to hide or remove students who are no longer in your class. The answer is maybe. It depends on if they are officially dropped from your class and appearing as red in your roster and gradebook. If not, then no, you cannot remove them until they have been unenrolled from the class. If the student is showing up as red in your gradebook though, you can hide them so you don't have to worry about them. Here is a screenshot to help you do it: