WHMCS allows you to create admins to access and use the Admin Area.
Admins have access to a personal calendar, to-do list, and notepad.
Add an admin account for each of your staff members. You can choose to set their credentials for the new admin or, in WHMCS 8.12 and later, you can send an invitation link.
Use administrator roles to set permissions for individual admins, like managing invoices, running module commands, or viewing logs.
Edit an existing admin. You can change their admin roles, permissions, and assigned departments.