Hello there, @MKE714.

At this time, opening multiple companies in QuickBooks Desktop is unavailable in QuickBooks. You'll need to 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.

In case you want to learn more about navigating your QuickBooks Desktop (QBDT) account, visit our Help articles page for reference.

If you have more questions, please get back to this thread. We'd be happy to fill you in.