Rent collected from a stylist belongs in its own rental income account, kept apart from the service revenue the salon earns on its own chairs, because the two are different kinds of income earned in different ways.
The practical setup follows from that. Each renter is created as a customer, and a recurring invoice matching their lease terms tracks what is owed and what is outstanding — the same way you would track any tenant. Rent that arrives in cash gets a receipt and gets recorded the day it arrives, because a rent ledger that depends on memory stops being a ledger. What a renter does at their chair, what they charge, what product they buy and what they earn is theirs, and none of it belongs in your file. The single most common structural error we find in salon books is a booth renter sitting in payroll, which mislabels a tenant as staff and puts revenue that was never yours into your service income.