Hello,
I'm rather amateur with this, so bare with me.
I extracted the tar and put it in the mediawiki/extensions folder.
Updated my LocalSettings.php with wfLoadExtensions( 'BlueSpiceGroupManager' )
However none of my sysop accounts can log in, I get:
Permission error
You do not have permission to read this page, for the following reason:
You are not allowed to execute the action you have requested.
So I'm thinking my account is part of some BlueSpice group which doesn't exist but is required for this extension.
Any help would be appreciated.