Go into settings, set power meter to "on", then ask the Garmin to scan- it should pick it up pretty much at once.
It'll register it as if it is a totally separate device- I use the Powercal HR strap when I'm on a bike with an SRM, using the profile in the Garmin which is not associated with the Powercal as a powermeter.
You'll need to be wearing the strap mind- otherwise it'll not be transmitting anything for the Garmin to find.
Go into settings, set power meter to "on", then ask the Garmin to scan- it should pick it up pretty much at once.
It'll register it as if it is a totally separate device- I use the Powercal HR strap when I'm on a bike with an SRM, using the profile in the Garmin which is not associated with the Powercal as a powermeter.
You'll need to be wearing the strap mind- otherwise it'll not be transmitting anything for the Garmin to find.