A:
If your PTO wants to reallocate the funds to a new purpose, it would need to Amend Something Previously Adopted (i.e., amend the adopted motion to give $15K for computers).
The form to make this motion is, "I move to amend the motion adopted on June __ to give $15,000 toward the purchase of computers, by striking out 'purchase of computers' and inserting 'restoration of the playground.'"
This motions requires a second, is debatable and amendable, and for adoption requires:
If the motion to ASPA fails, the money is still available to the school for computers.
To cancel that offer, the PTO can adopt a motion to Rescind the June decision, using essentially the same procedure as that for ASPA.