How users enter filtered fields
In the object page, you complete steps that are similar to the ones in this example.
-  Select a single value from 
C_COLOR. All values are listed here. -  Select a single value from 
C_SHADE. Values are filtered according to the selection for Color. -  Select a value from 
C_SUBSHADE. Values are filtered according to the selection for Shade. The list can be configured for either one or multiple selections.