You can add property set data to a wall style. Property set data is necessary if you want to tag a wall in a drawing later or include it in a schedule table. Property set data typically attached to a wall style are automatic properties, like wall height and wall width, or manual properties that are identical for all walls of that style, like the fire rating.
If the Add Property Set button is deactivated, no property sets for wall styles have been defined.
The properties in the set are listed in the Edit Property Set Data worksheet.