waypoints/stops garmn?

I tried to insert 4 way/stop points in my Garmin 54LM but only the last was recorded when I checked the route. How can I get all 4 in in one hit?.
Currently I see it only by arriving at the first stop entering the second, arriving at the second then entering the 3rd same with fourth pain in the arse and time consuming. Garmin having a job to contact them.
Many thanks.