Hi there, carlsie.steyn.
At the moment, opening multiple companies in QuickBooks Desktop Pro is unavailable. You can open your companies one at a time.
To open your companies easier, you can go to File then click Open Previous Company. From there, you can select the company you want to open.
Don't hesitate to post again if you have any questions. I'll be around!
I'm not sure what your IT resources are but we have Quickbooks Pro with 3 licenses at our office, so it's located on 3 separate computers. You could remote desktop into another computer that has Quickbooks installed and work from your PC with 1 company file & have another company file open in remote desktop.