The counselling usually takes place at Govt. Omandurar Medical College, but there have been plans of making it online.
Here's how counselling usually takes place:
But counselling does not end here. For post counselling formalities, you will be given a receipt. You have to go to another room where they stamp that receipt. You have to pay the fees in the counselling hall itself. Again you go to the IOB counter, get a DD for the fees specified and produce the DD at another counter, where they give you an admit card.
You have to report at your college within 3 days. If you are from a CBSE or ICSE school, you have to get an eligibility certificate from MGR Medical University showing your admit card there. To avoid the crowd reach as early as possible.