The “Point” menu is available under the “Route” menu at every waypoint.  From this menu you can either add another point to the route before or after the current point:

 or change the shape of the waypoint:

Changing the shape of a waypoint is useful when you want a player to block then break off the block and run a route:

or you change your mind and want  that receiver to be a blocker instead:

You can also remove the point from this menu which has the same effect as removing the “Move to Point” action from the script and will remove the current waypoint from the route.