Quantity Available is the number of packages available for purchase. Golf Spots are how many golfers are included in the Registration Package.
For example, for a Foursome you would have 25-40 available with 4 golfer spots.
For a Title Sponsor you might have 1 available with 8 golfer spots (if you are giving the sponsor two teams).
For a Hole Sponsor, you might have 18 available with 0 golfer spots.