Strong +1. For professional use, custom questions are more than a convenience. They are often the missing handoff between scheduling and a useful first conversation.

It would be very helpful if each booking page could define its own required or optional questions, using fields such as short text, long text, single choice, multiple choice and checkboxes.

Common examples are company, current role, reason for booking, desired outcome, relevant context, or which service or topic the person is interested in.

Ideally, the answers would stay attached to the booking and be visible to the organizer before the meeting.

This would make Proton Booking significantly more useful for consulting, coaching, recruiting, sales conversations and other professional services without forcing users to place a separate form in front of the booking page and ask for the same information twice.