My PC is a single-user machine. The physical desktop shows, by default, icons in two groups - Public and Personal. I want to show them for all purposes as one single group.
I have done that for the moment by moving all the existing icons (including the system icons) into the Public Desktop folder. But I would like to make that permanent and automatic.

So how can I:
  1. set Windows to merge the two into one (it does not matter which)
  2. ensure that all new items sent to the desktop go to the selected one automatically?