in your image you show a menu: you can create them with LabVIEW too, either static or programmatically using the menu functions.
You could also use a tree control to create such a "tree" of items…
thanks for your reply! Yes I am looking for something like the menu functions but I want to place it anywhere on the front Panel, not only the menu bar in the upper left Corner. Thanks!
you could create (or "fake") this behaviour by opening some subVIs for each subtree…
Make a button (or something) on the FP.
Tie the Left-click mouse-down event to an event that handles that button's shortcut menu. It's a little hacky, but it largely does what you're looking for.