Having trouble with spline point hotkey

There’s a hotkey option to add a new spline point at the cursor location. But it doesn’t seem to do anything. If anybody has some ideas, I would really appreciate it.

BTW, the hotkey is empty by default. I changed mine to what you see here (I also tried other, simpler hotkeys as well).

I wish I can have the answer to that one since I have the same issue on UE4.26, where is the community to help newbie ?!

For me, only right-click & select “Duplicate Spline from Point” works in UE4.26

I’ve since been alt+dragging from a spline point to add more.