Natural 9 Map processing rule for field on map

Natural Version 9.3.1

Processing rule for a field on the map:

*How do I write processing rule for a field on the map? pre Natural 9 .p on the filed opened up processing rule editor:

see documentation: Processing Rule for Field on Map
It is done from the Outline View. Does that answer your question?

In Natural for Windows, click “Rules” on the field’s context menu.

Thank you Ralph & Douglas.