Apart from connecting Drive directly from the sidebar in Postlab, there's also the option to do so within each Production. Doing so gives you a range of features, all built around Bookmarks.
Bookmarks are, well, bookmarks. They allow you to designate a folder anywhere on Drive, give it a name, and make it obvious to team members where you have stored certain files they might need for that production.
By default, a Bookmark inherits its name from the folder it points to. Renaming is easy: just doubleclick it, or right click, and select Rename:
Once created, a Bookmark can have several services attached: