Key Editor Move Insert Mode

I want to assign a Generic Remote line to toggle the step input Move Insert Mode but I can’t find the command anywhere - any ideas?
step input
I have created a command to turn step input on and off but can’t find any command (other than the mouse click obviously) that allows me to assign to Move Insert Mode.

There isn’t one afaik, unfortunately.

Really? That’s a tad frustrating!

They do nearly every command?! Why not that one!