This may or may not be helpful.  I have two drives on my system C: and E:.  My system and programs reside on C:.  I never  store data on my C: drive in my profile.  All of my data resides on E:.  This makes backups and system re-loads simpler.

On E:, I have a directory called "E:\DAZStudio\DS4Content" which is where I install content from DAZ, Renderosity, ShareCG, etc.  After setting up your content directory, you need to "tell" DS about it using the "Edit-Preferences" menu selection (see attached). 

When you download a .zip or .rar content from Renderosity or ShareCG, unzip it into a temporary directory, then  navigate down the tree until you see content folders like data, People, Runtime. etc.  Move these folder to your content directory (in my case "E:\DAZStudio\DS4Content"). 

I have DAZ Central setup to download my content purchases to a temporary directory.  After downloading, I move the content to "E:\DAZStudio\DS4Content".  Setting this up has become quite complicated.  It used to be very simple a couple of years ago.