Behaviour enhancement: Multiselect, dublicate a group?

I may have asked for this before, but here goes:

I would very much like to be able to copy more than one action at a time in the “Behaviour” dialog.

An example is seen in the the picture, where the exact same actions (with different content, though) should be applied for many different cases. It takes a long time to copy all actions one by one for each case.

Please add some multiselect…

Right now I can copy a single “Trigger Custom Event” action, but I’d like to be able to dublicate an entire Custom Event in the root. Thereby I could quickly create different Custom Events and make minior adjustments to each one of them.