Yes there are some seats that are kept under reservation and management quota. If they do not get filled up then management steps up to take the initiative.
According to the Government rules colleges cannot fill up seats in the name of donation. But management quota is pretty prevalent nowadays.
After your results are considered they then decide to go for admission. The management quota usually takes a payment of a hefty amount for the admission separate from the official fees.
Contact management to get an update on this information, as the rules and regulations could change.