Staff Members are your employees who can make edits to your venue on TablelistPro. Depending on their permissions, they can add reservations, view floor plans, seat guests, and more.
Promoters are your team members who spread the word about your events. They can add their own reservations but are otherwise limited -- they can't change venue or organization settings.
Each user in TablelistPro can only have one access level. If someone is set as both a Staff Member and a Promoter, it'll cause an error.