BEAM uses a cache file based system to store and communicate data between the software.
In the Rhino Panel and in the Revit Dialog there are button to set, reset and open the .beam directory.
The default .beam directory is C:\Users\%username%\AppData\Local\Beam\Temp
Use the local default folder to work by your own.
Set up one or more directories on the common network to publish, archive and share .beam between team members if they all set the directory to the same path.
The local folder can hold up to 50 .beam files, any other custom directory has no limits. Perform periodic cleanups of the custom .beam directories to save disk space.