I have quite a lot of questions pertaining to APEX, but I will keep to the main ones I'm curious about. I'm creating a Hotel database and am wondering how to change a field view. For example, when creating records for a booking, the Guest ID is required instead of the guest's name, which is not ideal. How can I switch the values of these so that the user can select the ID, and automatically populate the guest name and vice versa? Is this even possible?