I have a course with three separate sections, each meeting on a differrent day of the week, and therefore having different submission deadlines. I set up a Workshop activity for with separate groups. My question is if I switch to the assessment phase, is the submission phase still available? Specifically, I want to switch to the assessment phase for the Tuesday group on Tuesday so that they can start working right away, and have the submission still open for the Thursday section. Is it possible? Or I am now in a hole?