Use normal gig fields for information participants need to prepare for the gig, such as venue, times, dress code, setlist, itinerary, overnight stay, hotel address, and general notes.
Use internal booker notes for booker-only context and the accounting section for income, costs, calculations, and accounting notes.
Technical fields and the tech rider attachment are for audio and production information. Technicians can update these fields without receiving full editing access to the whole gig.