The Worker Table option displays all website users that are in the Worker database table. Checking the Worker Role checkbox will give them full worker permissions within the site. Unchecking the box will remove their website worker permissions, but keep them in the Worker database records.
The Family Table option displays all website users that are in the Family database table. Checking the Family Role checkbox will give them family permissions within the site. Unchecking the box will remove their website family permissions, but keep them in the Family database records.
The All DNN Users shows every website account in the system. Worker or family permissions can be given to any user, but doing so will NOT add them to the worker or family database tables if they are not already there. Users must be initially registered as Worker or Family to be added to those tables.