The “Bind Leader” tool is focused on creating a leader arrow between a selected text note and a selected point in your Revit project. With this tool, it is much easier and faster to create an edge-aligned leader for the selected text note.
To use this add-in, select the desired text note and then the point where you want to place the end of the leader.
Once you have made your selection, the add-in will automatically create a leader arrow that connects the text note and the edge of the object.
https://www.youtube.com/watch?v=7l9B127wFck&list=PLm6RxQvKpbdct9wkv6yi6sm8krFzs6Mgy&index=5