In Mudbox, I used to be able to import multiple objects exported as one file, and then subdivide them individually. Like say, I only want 2 subdivisions on object 1, and 3 subdivisions on object 2. How do you do this in Zbrush? I tried assigning my objects to polygroups, and trying to subdivide by hiding the one I don't…
go to the SubTool panel press GrpSplit, it makes a subtool out of each polygroup (if you want all your subtools back in one single mesh again, you should get Subtool Master plugin and use the merge function)