I am afraid not, you need a more sophisticated DVD authoring tool for that.
Ann is correct. In Premiere Elements you can only have a main and scene menu.
This is why many people supplement Premiere Elements with a dedicated DVD authoring program. My personal favorite is DVD Architect Studio, a $39 download.
+1 for DVD Architect.
The authoring capabilities in PrE are very limited, and linear. They work fine for easy authoring in the vast majority of Projects, for the vast majority of users, but when one wants more intricate navigation, another program, a full-featured authoring app., is the answer.