I opened a new Google account for our lab. We can use it for scheduling presentation and other purposes. 

Username - thirdspace.uoft

Password - thirdspace12345

When you log in to this account, you can go to https://calendar.google.com/calendar/r?pli=1 and see what things are schedule for the lab meeting on Wednesdays. You can also schedule your own presentation in the lab meeting time slot. Thanks.