This option is used to update any shared models in the project.
Continue down the page to see the Synchronize Shared Models from Project Panel options.
The Synchronize Shared Models panel has already been documented in the 12d Wiki Website.
To view the Synchronize Shared Models post please visit: Synchronize Shared Models
To view the Synchronize Shared Models Panel,
Use: Models => Utilities => Sharing => Synchronize