Rev. Dr. William Barber II will be a guest lecturer at Wharton Center on Thursday, Feb 22 at 5 pm. Get there by 4 pm to catch the crowd. Two good places to stand to collect signatures at Wharton are: in front of the main entrance, and in the hallway connecting the parking structure and the side entrance (and the hallway is covered but not heated). 
Go with more than one person because attendees move fast and don't want to stop long. Groups of people can sign more quickly with a several volunteers there. 

See more details about the event here (https://jmc.msu.edu/events/event.php?id=611), or check the Wharton Center website.