Draw line only through existing points
Is there a possibility to draw line only through existing points? I tried to create tool but iz also didn't work.
I would like to use tool only on existing points and not allow users to create new points when drawing with line tool. For example, just A, B, C and D to be on screen and user can only draw lines through these four points and not ot draw more points when using line tool (blue dots).
Is this possible to do in some way?