That isn't what I meant.
When you look at these panel menu, there are three groups and when you open the groups there are Items and I want that you can add Items to the groups and delete them. These functions has to be somewhere in these Panel menu as an symbole or button or something like this, but i don't know how to add these symboles or buttons to these menu.
Or gives an other menu, which allready gots these functions?
sorry.. now got the idea... jjust use label facet instead of label attribute. And defin the controls which should be insde in this facet.