Not exactly sure, if this is what you're looking for @TWilliamsA, but here's how I work with Aldrichs system, thus having backs, fronts and sleeves in the same pattern piece in Valentina
I use the group tool to "separate" pattern pieces, e.g. front and back, in draw mode.
That way you can make the front pattern piece invisible, while you work on the back. It makes everything less cluttered. I usually group my "back piece", "front piece" and "sleeve piece" from the block pattern. Then I add design and style lines and group those as well.
Hope it helps.