After Promoters have been added to your account, your Promoter will be sent login details. 

They can log in to the Promoter hub at: pr.myguestlist.com which is also where they can add and edit their guestlists.

An iOS App is also available for promoters to use and can be downloaded by searching "MyGuestlist Promoter Hub" from the app store or via this link.

Your promoter has their own separate login and won't have access to your data or the other lists created by other promoters.

To add a promoter please see How do I add a Promoter