QuickBooks Desktop uses a database file manager to communicate with the company file.
Use the Recommended mode to set up your file: The Recommended multi-user set up is having the company file stored on the Host computer.
Turn on Hosting
Important: Turn onhosting only for theHost computer or where the company file is stored. If you're using a server to host your file, one computer still has to act as a Host. You mustnot turn on hosting for workstations.