Hi Shell123,
Welcome to the QuickBooks Community. When it comes to managing users, QuickBooks offers the flexibility you need in order to achieve your goals. I'll be happy to point you in the right direction with managing users on your account.
QuickBooks offers a variety of user roles and I encourage you to learn more about this using the details in this article here. The article provides more details on how to add the and as you do that in the program, you'll be able to see the roles available to add and their descriptions.
Let me know if this info helps by leaving a comment below. I'll be one message away.