Yes,
on PC the Models folders can be shared on the Network, for Two Pc's to use the same Files.
I don't have a MAC, so I don't know if the Mac Model Files are same as Model files for PC.
I would think YES.
Copy the Models Folder to the Network Share.
Then on each Computer, you would just need to Alter the Settings that tell VG what Folder the Models files are in, and change it to the Network Share.
The Data Files, must stay Unique to Each Computer.
But you can also Put the Data files on the Network,
Each Computer Needs it's Own Data folder.
So that would mean a Separate Share for the Data folders, one for each computer.
Lastly,
Only ONE SINGLE user Account can Share the Same Model files.
the Models are encoded to the User account.
So if you have More than One Totem Account, Then you Need to Purchase and Download the Models For EACH account.
You can not Share Models between Different Accounts, because encoding is different for each one.