Adding Midpoints to orthogonal line segment
 

Ok, newbie but i looked thru pdf manual, help, tutorials, menus etc.

When I create an orthogonal line segment, I can make multiple segments by clicking and then double click to end the segment.
Then I can select the segment and right click to get a popup menu that includes "Remove Midpoints". That wipes out all the midpoints.

How do I ADD MIDPOINTS to an orthogonal line?
I'm trying to do the layout manually because the auto-layouts dont work for me at this time. (and i've got to get E Size document done for 8am meeting tomorrow)

And how do I remove individual midpoints, rather than all of them?

Do I have to make multiple lines?

Option-double-click any line to add a midpoint, there's a preference in the General prefpane to change this to double-clicking a line to add midpoints.