Activity profile and sensors

For the Enduro,

Can you control which Sensors your favorite activity profile uses?

Examples,

I have multiple HRM, and HRM-Run Chest straps.

Multiple Cycling Power Meters, Speed and Cadence sensors.

I would like to configure my outdoor Cycling profile to use one set of sensors and my Indoor profile to use the others.

Likewise, I would like to insure which HRM sensor (Chest straps is being used in multisport, Run, Hike, Walk). 

I assume that if the HRM strap is not detected, all Activity profile will default back to the Wrist HRM.

Is it possible to display both the Wrist and Chest strap HRM details in Garmin Connect?

I get the impression from DCRainmaker, that the data has been recorded, but you have to export the activity FIT file and use a 3rd party tool to actually see that data.  Why?  

Anyone else have similar control questions?