You can configure the source for your GPS in network settings.
For the best accuracy you will want the GPS sensor you are using to be as close as possible to the transducer you are using in order to have the most accurate waypoints. It generally isn't as important to have the HS function at the console unit since you will normally be moving faster when at the console.
What you may be referring to is whether or not you can share the HS separate from the GPS from a single HS GPS. With the Helix series, if you want to share the HS you must also share the GPS .... The Onix and Solix units can share them separately ... so with them you could have the GPS come from one puck and the HS info come from another.
Not sure if any of that answered your question or made it more confusing.
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