What is the proper spelling for multi-family?

Put a contract in place that spells out the terms!

If you are licensed you want to clearly spell out in writing that you are not acting on behalf of the seller, the amount of profit you intend to clear on the sale, and do the same for the buyer.

A note and a security deed.Note spells out the terms of the loan, the deed secures it against the property.My pitch is pretty simple.

A contractors bid includes their pay, profit and overhead spelled out in a contract. 

You'll also have to pay additional fees (usually a flat rate but you can get estimates from them) to have them draw up the mortgage and note documents that spell out the terms of the seller financing and make things official at closing.

An assignment is very simply closing instructions and my title agent wouldn't care if it was on toilet paper so long as I spell the names right.

Just be sure that your paperwork and contracts spell out what this person actually is or you could have tax issues down the line.

The rental agreement should spell this out. 

You might want to spell-check and proof-read your posts. ;-) I think I know what you are saying though.