I am pretty sure I was able to appoint myself a general when I was a ruler. Maybe it depends to governing system?
It absolutely does. I forget the details off the top of my head.
EDIT: Did a quick look. Cannot appoint yourself to council positions in democracies and republics. Cannot appoint yourself as judge in a monarchy. Theocracies and tyrannies rulers must be able to appoint themselves to any council position. I do think those you cannot appoint yourself to can still be acquired by winning in an election. But really, unless you really cannot find anyone to hold the position, share the power!
