I've spent a lot of time looking through the documentation and forums and am struggling to find information about how to add custom fields to the participant list. I have a field called "school_setting_name" but when I insert it into the participant list it doesn't change to the date that is in the field - it just displays school_setting_name. I have found a forum post that mentions using MAT_BOOKING_CUSTOM1. Are these system variables to describe the custom fields that I've created?

I'm keen to understand the syntax for pulling custom information from the database into the sign in sheets and emails