Hello @IMMANIVONG Viraxay ,
As per my research, Bookings Graph API currently does not support activating customer information.
However, under “Custom fields” you can use customQuestions property which Contains the set of custom questions associated with a particular service.
customQuestions has “isRequired”
property which Indicates whether it is mandatory to answer the custom question.
Refer below docs:
https://learn.microsoft.com/en-us/graph/api/resources/bookingservice?view=graph-rest-1.0
https://learn.microsoft.com/en-us/graph/api/resources/bookingquestionassignment?view=graph-rest-1.0
Hope this helps.
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