Pairing a heart rate sensor with Edge Touring

Not sure if this the correct subforum for the Edge Touring but could not find a Touring forum.

I am trying to pair a Garmin ANT+ heart rate sensor with my Edge Touring.  It is not the Plus model - but from what I've read elsewhere on the internet, the Touring should be able to pair with a heart rate sensor.  (DC Rainmaker's review states "The Touring does allow you to pair the ANT+ heart rate strap, but does not allow other sensor types (i.e. cadence sensors, power meters, etc…)."

I don't see the option in the System menu to add the sensor.  Am I missing it?  Or is there some trick to it?

EDIT:  Further research tells me this is not possible with the Edge Touring.