Rooms and chairs in columns, hours in rows. Siesta and holidays greyed out, not forgotten. Move a booking with one tap and the client gets the new time by email.

The agenda is the salon's day as the staff see it: every room or chair is a column, every hour a row. The owner sees the whole salon; a specialist sees only their column and never the prices or the client's phone number.
Changes travel both ways. A client moving a booking from their phone appears in the agenda in a second; a specialist moving it at the desk sends the client an email with the new time. Nobody calls anybody.
14 days free. Then €5 a month plus €2 for each extra account during launch. No contract.