Configuration Specific Custom Properties

When I enter "File Properties" and go to the "Custom" tab, I can sucessfully enter values for a variety of custom properties.

However, when I go to the "Configuration Specific" tab, none of the properties show up - "Punch ID" becomes the only selectable option.

I'd like to be able to make multiple drawings from the same part file, using multiple configurations, featuring different title block info for each config.

Can anyone help me navigate a solution?

Thanks!

Dave

SolidworksConfigurations design Tables