Multi-company support is only available in our Standard version.

With multi-company, you can have one ConnectWise PSA instance go to different QuickBooks Online accounts.  This does not support more than one ConnectWise PSA file.  This will only apply to multi-company on the QuickBooks side.  

If you do have the Standard Version, You can add another company to your Mobius account under the Setup QuickBooks Online tab>>Add New Company