I'd suggest advertising a chair for rent, tho a chair renter is self employed so you would have no say over hours they work/breaks/time off etc I'v previously rented chair on a weekly rent basis tho some people prefer to charge per day, my chair renters supplier all there own products and equipment, and took all there own appointments and had to hire there own assistant, I had issues in the past were I arrived at work and my chair renter had all her prices advertised in the window under cutting me! So if seriously consider every aspect, have it in writing everything there expected to supply shampoo towels etc.. also had a chair renter who hired another stylist to work with her!! I would be crystal clear with your arrangement at the beginning you would be surprised what they expect! also another rule I had to implement was that all walk ins belonged to the salon staff, if we were busy and the client couldn't come back then we offered it to the renter, you may get someone lovely who understands renting a chair or you could get a nightmare renter best lay down the guide lines at the start maybe even a written agreement, I'd also highly recommend checking that they have their own insurance,