how do i allow clients to add their own modifiers when booking an appointment?

KTDAY — Sun, 21 Sep 2025 11:15:18 GMT

I have a service set up and have sorted out the availability, but cannot get the booking link to allow clients to add modifiers themselves at the time of booking.

thread how do i allow clients to add their own modifiers when booking an appointment? in Payments Troubleshooting

how do i allow clients to add their own modifiers when booking an appointment?