Manager # for Sign Holder Job?

Anyone know the number for the manager of a sign holder/waver/spinner job??
In San Jose, CA 95132.
Also, what is the minimum age?
Thanks!!!

I suspect individual stores hire their Sign Spinners

Try classified ads sites like Craigslist.org

A nationwide Google search of, site:Craigslist.org "sign spinner"
got 907 results.
Adding age to the search seemed to get a lot of 18+ requirements.

I see no legal reasons to restrict the age, but to limit their liability they may well choose to only hire 18 and up.