Heyy G.Mahesh Kumar....

The Tamil Nadu management quota means that the , 85% seats in government medical colleges and 65% seats in private medical colleges comes under the purview of state government. For these seats, only candidates from Tamil Nadu will be eligible. State government is expected to release a state merit list based on the NEET score for admission to these seats. There is not other form as such to get it, you'll be eligible for it automatically if you're from Tamil Nadu.