To get the HUD (health, ammo) onto the middle monitor, go into your FALLOUT.ini.
fSk圜ellRefFadeDistance used to set the distance for neverfade objects (the references under a base element with the neverfade flag always show to maximum draw distance) in previous games, but appears to do nothing in Fallout 4.
fSk圜ellRefFadeDistance is believed to be unused by the game.