We'll look into the wording.
There is no folder by folder control as yet. We're thinking of adding it as an option, but as yet, it is not a common request.
If you sync a folder outside your Google Drive folder, Syncdocs will create a symlink and sync to this folder.
The older Syncdocs versions (3 and below) would give the option of copying the folder to your main Google Drive folder, but this proved confusing and used more local space, so we create links, which allow one to sync folders from anywhere.