I have an arrangement that is a renter/IC combo. It's pretty hands-off, and to be an IC and not an employee, it needs to be. Maybe this'll help. My arrangement works like this:
Compensation: All payment for massage is processed through the facility. I fill out an invoice form every week that spells out who I massaged (just their name, so they can compare it with the front desk records), the amount the client paid, and the length of the massage. I get the entire amount, minus only $10 per hour for room rent and 15% "referral fee" which is not really a referral fee the way those fees are commonly understood. It basically goes for the receptionist, advertising (which they do) and whatnot.
Equipment: They supply the facility, the table, and the music. I bring everything else--sheets, lubricant, essential oils, pillows, bolsters, blankets, table warmers, whatever I want. (I am not requested or required to provide both oil and cream; what I use is what I use.)
Scheduling: I submit my availability for the coming week 1 week in advance. Once I commit to that schedule, I must adhere to it, barring any emergencies. If I don't have anything, though, I can call myself off and not come in. They're trying to change that last part, but I don't think they really can. They can't require you to be there if they have nothing for you and they're not compensating you for the time. Sure, there are examples of facilities who do exactly that and get away with it, and arguments could be made that it is "legal" simply because it's not necessarily "illegal", but to require someone to be there uncompensated for their whole "shift" starts to sound W-2-ish and NOT an IC. So I don't think it'll stick. The facility owner will eventually back down on this one; he has before.
Other duties: Since we're paid per massage and ONLY per massage, we are not required (nor can they do so!) to answer phones or do janitorial duties or whatnot. (We launder our own sheets on our own time at our expense, but that's the cost of doing business. We do not do anything at the facility but provide massage.) We go ahead and pick up the phone when we're in the office and the receptionist is occupied or on another line, but we're not specifically required to do that, either.
Promotion/Domain of Clientele: The records belong to the facility. We do not keep our own separate records, unless we see those clients outside of the facility, which I'll get to in a sec. The clients are sort of shared between us and the facility, because the owner does not actually care if we see the clients outside the facility. In fact, they encourage us to build clientele and take them with us. This comes in really handy when a client lives near my home studio (which is about 20 mins away from the facility with no traffic, and 45 mins WITH traffic) and doesn't want to drive as far. Or, they want an integrated massage like we offer instead of having to decide whether they want Swedish OR Deep Tissue (it's one or the other at the facility). Or, when they want a massage from one of us (my husband and I both contract there) but on a weekday evening, when we're not there (we're only there on Sat's) or on a Sunday (when the facility is closed altogether). Anytime we see someone in our private practice, even if they're our regular client at the facility, they fill out our separate paperwork the first time they see us privately, and we keep our own records every private session thereafter. Some clients go back and forth between seeing us at the facility and seeing us privately. Where we keep the records for that session depends on where they saw us that day.
Hope that helps
Hugs,
~Jyoti