The process of shooting a multi-cam comedy is much different than say, a one-hour drama. Through the week, the writer, director and actors rehearse and tinker with the script and blocking and the crew gets the cameras set in anticipation of finally taping before a live audience at the end of the week. As a stand-in, you help to work out the timing and marks for the cameras and fill in for the actors when they can't be on set.
I'm not sure when Giant Baby will air, but I hope it gets picked up to series, as that could mean more work with this cast and crew!
Here’s a series description, courtesy of TV Land.
Giant Baby revolves around Madison “Maddie” Banks, a Broadway star who finds her life turned upside down when Arlo, her long-lost son, turns up looking to connect after his adopted mother has died. However, Maddie doesn’t exactly see nerdy and schlubby Arlo fitting in with her luxurious lifestyle. When her attempt to change Arlo backfires, Maddie finds that perhaps they both could use a little change in their lives.