I can share some information about creating and maintaining multiple company files in QuickBooks Desktop, @tomacsh.
Yes, you can have multiple company files using QuickBooks Desktop (QBDT) Premier Plus 2022. QuickBooks Online (QBO) is limited to one company file per subscription. However, you must have an active QBDT subscription to open your company files.
For more information about system and browser requirements for QuickBooks Desktop Premier Plus 2022 and frequently asked questions, see this reference: New in QuickBooks Desktop Premier Plus 2022.
To know the recent features that can simplify your daily accounting tasks in QBDT Premier Plus, refer to this article: What’s new in QuickBooks Desktop 2022.
Once you've decided to get QBDT, here's detailed information on how to install and activate it right after: Install QuickBooks Desktop.
Let me know in the Reply section below if you have further questions about company files or anything else about QBDT. I'm always here to help. Have a great rest of the day!