Go to Booking →settings → frequencies
Click on new Frequency
Give the frequency a name
Set it as active
Select the type of discount the frequency will have, fixed amount or percentage
Set the price or percentage
Mark this frequency as default if applicable
Select the display order
Choose a time interval
Select the services associated with the frequency
Click create
Go to Booking →settings → frequencies
Select a frequency and click on the edit icon
Edit what you must and click update
Go to Booking →settings → frequencies
Select a frequency and click on the delete icon
Go to Booking →settings → frequencies
Select a frequency and click on the edit icon
In the section "Choose Services" Add or remove the service(s) you want this particular frequency to have.
This is useful when you want only certain services to have a specific frequency discount.