It was for the holiday season so they pretty much hire anyone that can stagger in the door. I gather they hire anyone that passes the background check, and they hold out the carrot of keeping you on after the season, but this doesn't really happen very often.
I applied online. The process took 2 weeks. I interviewed at Toys "R" Us (Syracuse, NY) in Aug 2017
Interview
Group interview. You have to tell a bit about yourself, then go into the store, pick a product and "sell it". Very easy interview. Lebron James in the greatest of all time.