On the screen in PEP3, of course.

On the screen, that you have displayed, for the 9800, the image shows the screen with 5 buttons beneath it. Note that the right-hand side of the image shows that you are viewing 'Activity Properties' and not the properties of Firm/Hard Button 4.
While on this screen with your mouse, click the 2nd button from the right of the 5 under the screen. That is Firm/Hard button 4.