Hi Laurie,
Thanks for asking. It's valuable for me to get this kind of feedback so that I can get new ideas for how to make Condes simpler to use.
You can bend a leg line by adding a point to the line, and dragging this point as necessary.
1. Select the leg by clicking on it
2. Select the "Add point" tool from the toolbar at the right (a purple box with a "+" sign in it)
3. Click on the leg, and keep the mouse button down, then drag the corner point to the needed location.
You can add as many corner points as you need to the leg, and you can move existing corner points by just clicking and dragging them.
The "mandatory crossing point" is - as you found out - meant for the situation where you want to indicate the crossing with a crossing point symbol. And the "end of marked route" is for when you mark part of the leg with streamers that have to be followed.
regards,
Finn