Hello Conjureone,
Yes, multiple Player can work access on one BM1.
Start the Service Menu (Desktop) of your BM1, start the Windows
Explorer, Search for the bm-Share directory, right click for properties,
In the Tab for Share and Security the Number of parallel Users is set to "1".
Change this to Number of parallel Users you want.
Restart & Be happy
Cheers,
Niederrheiner