Hendricks Conbine? Anyone ever competed?

I’m new to the subreddit, and thought this would be the best place to ask.

My husband (28) desperately wants to work on a NASCAR pit crew and has the athletic ability, speed, and coordination to do it. He has been working out daily to make sure he’s ready in June. We have found the admission videos/interview section of the Hendrick’s website, but haven’t been able to find much that really explains what all he’ll be expected to do AT the combine.

Has anyone competed in the Hendrick’s Motorsport Conbine for pit crew or know someone who did? Any insights on how he can prep to be successful?