Starting in Vectorworks 2018, users can now create menu commands defined by Marionette networks.
To do this, select a wrapper in your file, right click, and choose "Convert to Menu Command..."
This will open a dialog window where you can name this command. A background process will save your Menu Command to a file in your User Folder.
Once that's complete, you can access the menu command by navigating to Tools > Marionette Commands > [YOUR COMMAND HERE]
This node when converted to a Menu command will prefix all of your classes, excluding None and Dimension, with the Prefix of your choice.
By default, the prefix will be "Prefix-"
Keep in mind, if you want the dash to appear for hierarchical display, you must include it in the string.