on};
const newCustomQuestion = customQuestions.add(newCustomQuestionDesc);
// get custom question by id
const customquestion = await business.customQuestions.getById({customquestion id})();
// update custom question
const updateCustomQuestionDesc: BookingCustomQuestion = {booking custom question details -- see Microsoft Graph documentation};
const update = await business.customQuestions.getById({custom question id}).update(updateCustomQuestionDesc);
// delete custom question
await business.customQuestions.g