Normally, polygroups display sections of a single mesh. If you want to convert polygroups into SubTools you can do the following. If your model has different elements go to Tool > Polygroups and select Auto Groups. You can then go to SubTools > Split and click Groups Split. Groups Split wi...
When importing an .OBJ with the Poser Scaler Plugin ZBrush preserves the group names. If I save the tool as a ZTL file and reload it, the names are gone. This is too bad. I hoped that there was a configuration option to preserve the names. It would help greatly in order to create ...