As you're planning your schedule for your group's project, you need to know tentatively when the presentations will be due in class. Here is the plan;

11:15 MWF class: Presentations will be Dec 6, Dec 9, and Dec 11.
2:30 MW class: Presentations will probably be Dec 9 and 11 only. 

You'll be able to sign up for your presentation slot in class on Monday 11/18.