@JuneMoon 

You may have other options:

1. Each store will manage its own company files locally. All stores will send regular company files to your office and you can use the Consolidate feature to continue.

2. Set up a simple private cloud solution in your office. All company files will be stored on a server in your office. They will access the files over an internet connection and they won't need to install QuickBooks locally. You can access all company files at any time.