Where it usually starts
A beauty salon sells a wide menu through a small team with uneven qualifications.
- One therapist does lashes and brows, another does gel nails and waxing, a third is the only one certified for the newer skin treatments.
- A generic booking app treats them all as interchangeable, so a lash lift is booked online with the one person who cannot do it, and the receptionist spends the morning ringing round to swap it.
- Treatments also need the right place: a wax needs a private room, a manicure needs a station by the window, and the room count is lower than the therapist count, so two valid bookings collide on the one room they both need.