Use conditional visibillity to show different page elements after selecting items from an enumeration (I suppose you have an enum to store the selected process?). Ik you don’t use an enum it is also possible to use a boolean value or other conditions in the conditional visibilliy. Just be sure to refresh the object after changing it by clicking one of the buttons.
If the reference selector does’nt work there is probably an issue in your domain model. Can be related to entity access rules.