Just call Marriott Rewards to ask for a Point Combining Form to give your friend your points. Unfortunately, points can be transferred only in 1000 increments, so if U have 3545 points, U will be stuck with 545. MR will fax 2U, then U fill your half & sign, then give/ fax it to your friend, who fills out his half & faxes to Marriott. NO fee. It takes a few hours for MR to process.
The friend must have an award res. for which s/he is 3000 points short. He can quietly cancel the res. a few days later & keep the points.