The HUD should show the charge in the sellers' column on page 2.
On page 1 you do a credit from the buyer to the seller in the 200/500 section.
Caveat: If FNMA is the seller on this, you're sol. They dictate how the HUD must be prepared and they will force you to put it in the borrower's column and cure for it. This flies in the face of all that RESPA says but they just don't care. It's another perfect case of one tentacle of the government not caring how another tentacle is operating.