This is my prefered way of handling multiple prop components. From the Free Stuff, download and install "MinFig". Note that this is NOT an automatic install. Extract the files in MinFig.zip to any sub-folder of the Poser character folder.

In poser, load MinFig, parent all the components to its 'Body' actor. With MinFig selected, from the Poser menu bar select the 'Figure' menu, then select 'Lock Figure'. When you lock MinFig all the props parented to it will also be locked. Using MinFig you can do various operations on the props as a group, to move all the props as a group just move MinFig's Body, to scale all the props scale MinFig, to hide all the props hide MinFig, etc.

If you save MinFig back to a Figure pallet (with a new name) all the props will save with it. The only down side is that you will have to remember to look for your props in under the Figures pallet, instead of the Props pallet.