You may use this article for more detailed information: Hosting your company data in multi-user mode in QuickBooks Desktop. In your QuickBooks Desktop account, go to the File menu.But first, please know that the recommended set up is having the company file stored on the Host computer. You can follow these steps on how to set up a multi-user network. Then, the rest of the users can access each file you have.
All you need to do is to set up a multi-user mode in your server and working station. Thank you for joining here in the thread since you have two user licenses, you can have two users access in the same file.