Is there a way to re-arrange the Event Graphs in the Level Blueprint?

As on the topic, I’m developing a game with multiple UI interactions, I wanted to use delegates and implement them in the event graph.
But there is a problem: The Event Graphs that I use to categorize different functions are unable to re-arrange (cannot drag).

Is there a possibility that the future version will support the feature of re-arranging the Event Graphs?

(By the way, I could really use some help upon how to design multi UI switching logics, managing all these delegates is making me crazy. The code has been refactored three times and it’s still a mess.

I mean, even the functions and variables are able to re-arrange, why can’t Event Graphs?