You can not activate the Hatching option alone for the stair elements down in the Section area.
But you can activate it together with Pattern option.

By the way: Why are there check boxes instead of radio buttons?

Balázs Schneider
NAZCA Engineering Office

- first Allplan install on Interactive Unix in 1993
- 25 years in localization of Allplan
- 25 years in technical support for Allplan
- 30+ years using Allplan as structural engineer