Add vetext to edge

Please create new streamline tool for free vertex to edge

Create/Insert/Snap Vertex

Vertex mode: Hotkey = D

it is not the 

how to make a point in this place ? http://joxi.ru/rkdpU_3JTJA5UxoVRNw

Change to "vertex selection"

1: Enable "Snap to edge"
2: Press (hold down) "D"
3: Move mouse cursor over edge position you want to insert vertex, LMB

sorry did not know that the tool works so