Hello aspirant. NRI quota seats or managements seats are handled by the management. Usually the fees would be a bit high compared to that of admissions through the normal process. Select the private colleges and choose the one you wish to get admitted in. Only some of the private colleges have management quota seats. So figure out if that college has managment quota seat and talk to them. If yes, then as soon as possible submit certain documents where the student's blood relative should be residing in abroad. That is for NRI proof.  Certain other documents like aadhar card, pan card, I'd proofs of relative etc. Then you need to pay certain amount, you would get the seat.

Hope this helps

Regards

Nikhitha