In Brightpearl, staff members are contacts with a few extra details.
You can view the list of staff members at Settings > Staff / Users > List staff.
Via the staff list, Brightpearl users can be given access to:
Other apps will have their own ways of adding and authenticating users.
Using the Permissions link, you can control which areas of the back office your staff members can access and edit.
In POS and WMS, the staff member's role affects what they are allowed to do.
Staff members can be assigned to one or more teams (a manager might be assigned to all teams).
Teams can then be assigned to specific customers, sales or purchase orders. Staff members will only be able to see data their team has been assigned to, or data that has not been assigned any team.