He stays out of the way and allows Booger & Son to run the show, that is his job and why he was hired. They let him walk, another just like him is coming in the door. Hopefully, better on the sideline during games but no HC is stealing his thinder.
Booger once said he didn't want a "walk around HC" then, as it often happens reverses himself and makes him a walk around HC. Just has to make sure he walks out of the camera shot when Booger is in it.
The other thing he does is study the book "1001 Creative Ways to Drop F Bombs".