It’s a SOP Solver, so just do your group masking the SOP way 🙂 Specifically, set the group mask on your wrangle nodes to @name=boxes* or @name=spheres*. You really only need a single SOP solver (with Data Name and Group back to default) with as much wrangling per-group as you like inside of it. I really like to keep it simple and keep all of my packed geometry coming from a single SOP source into a single RBD Packed Object. Do as much as you can with SOP-type workflows, avoiding DOP anachronisms at all costs.