After performing calculation ("Checks" Tab) you can display and/or change stirrups in the "Stirrups-Ductility" Tab window. In the below figure is shown an example of a section within critical region of a ductile wall designed for seismic zone. Note the two hoops in the boundary regions and the cross-ties in the same regions. In the web region of the wall (out of the boundary confined regions) are provided n.9/m² cross-ties but them are not displayed in the graph but only indicated in the text.
Only cross-ties can be added or erased in the grid. After the eventual changes you can check again the section clicking the "Check" Tab.