Board Thread:Skyrim/@comment-101.171.213.68-20131006105613/@comment-16473632-20131006121206

click desired person and type "addfac 5C84D 1" and enter, also "player.setrealtionshiprank (desired NPC code) 4" after that.

then they'll be a potential follower and when they do they can asked to be a steward.

but If, just if you see if there are no steward dialogue, you need a Creation kit to change the NPCs dialogue type to the Steward dialogue.