Greetings,
For either Victor Airways or Jet Route, program in the flight plan:
1. The entry point on the course (intersection or VOR)
2. Any heading changes along that route (a turn at a VOR, intersection, NDB, waypoint, etc.)
3. The exit point on the course (intersection or VOR)
If ATC has you intercepting the airway/route between waypoints, use the Direct Direct feature to activate the leg between waypoints, and verify the white airplane is headed towards the pink line.
I've been doing this for years on the various GPS units. It's far less programming than what the CNX80 requires, although the next software update should change that.
Fly SAFE!
Jedi Nein
P.S. Check out my post in the Buying/Selling Section. I've finally posted my GPS books for sale. The same procedure is in the Garmin 530 book. <end shameless plug>