This area controls what permissions employee or internal staff (Internal Users) have within the system. An internal profile can also be selected to send notification emails. You can customize the security permissions for each profile uniquely. Doing so can lock down certain employees from doing specific functions within the portal. Each checkbox under Master Admin corresponds to a menu in ConnectBooster.
Use case: you want an employee to view and manage your customers inside of ConnectBooster, but don’t want to allow them to change any of the ConnectBooster settings. In such a scenario, simply create a profile that has the "Customers" check-box marked and "Settings (4 sections)" unmarked.