If you have a feudal Monarchy the there are the following Questions.
Are the fiefs hereditary?
Are the Wardens hereditary?
The Wardens are they
appointed for life?
rule every Warden a quarter of the kingdom, or only his part of the Kingdoms border?
How is the goverment formed?
I mean such posts will be useful
as Chancellor(Chif of Royal administration, paperwork, diplomatics etc
Treasurer or how the post is called who collect the taxes etc for the king
Grand Connetable ( CinC of the armed forces of the Realms)
If necessary Admiral of the Realm(CinC of the armed forces at sea of the Realms)
Captain(s) of the Royal guard(s)
a few of this posts could get equivalents in the administration of the wardens.