hi guys, i've decided on trying to do some freelance work while i'm still building my own studio, but i'm not really sure exactly how the proceedure works. the studio i used to work in didn't really have any freelance engineers come in, so unaware of the basics. for example, once i have a band interested, do i just approach a studio of my choice and say i'd like to bring a band in and run the session? does one of their staff have to be there to supervise? are there any standards or bits of etiquette i should be aware of? thanks!