Multiple Docks on the same screen Is it possible to have multiple Docks on the same screen?

Like, one on the bottom, one on the left, and another on the right?
You cannot have multiple native macOS Docks. There are Dock alternatives however, some which support multiple Docks and others that support just more organization. Compatibility is very much dependent on your version of macOS.
One alternative that seems to work with macOS High Sierra is uBar.