Can you clarify what you mean by profile between waypoints? Do you mean along your route, but using the waypoints as the start / stop rather than the full line? If so, there's no quick way to do this but there are several workarounds. Are you trying to do this once, make it easy for someone else to do on the map, etc?
With a pro membership, you can export the elevation data for each leg as a CSV file and then manipulate it on your own in a spreadsheet program. Depending on how in-depth you want to go, that may or may not be the sort of thing you're looking for.