Hi @Fadeparlor
if you are in the Square dashboard and navigate to Appointments > Staff you can add them there and they should be visible to clients based on services and time.
However, with that being said not sure of your situation, but It may make things easier for you in the long run if you referred your stylists friend to set up their own account , you can get some reward perks, and it may make things a little less hectic/complicated come tax time. Just my .02, hope the other info helps.
