How to define Schedule list in Standard Preferences?

We would like the ability to filter our component selection with the Specification, Pipe Diameter, and also the Pipe Schedule.  We have managed to add the Schedule property to the standard preferences tool bar but the drop down list is not showing the list of schedules in our specifications.

  

We would like to be able to filter out STD, or Schedule 10, etc.

This is what the class editor looks like.

OPM version 08.11.09.568

Brynn Paluck