Just in case anybody hadn't realised...

If you’re using an ordinary prop and the DummyHand proxy you should only need to do the setting up once. You then *save the proxy and positioned prop together as a single item.

Next time you want to use the prop load it from this new file (the proxy and prop will appear together at the world origin), select your figure and the prop (not the proxy), and run PropGoto+. Your once-ordinary prop will now load into the hand of any of the supported figures.

*DAZ Studio 3 is a problem - there's no way to save a prop!

*DAZ Studio 4 - Save As > Scene Subset, select just the prop and proxy

Poser - Click the '+' button in your Props library, select 'Subset', and check just the prop and proxy.

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The 3Dcheapskate* occasionally posts sensible stuff. Usually by accident.
And it usually uses Poser 11, with units set to inches. Except when it's using Poser 6 or PP2014, or when its units are set to PNU.

*also available in ShareCG, DAZ, and HiveWire3D flavours (the DeviantArt and CGBytes flavour have been discontinued).