Hello aspirant,

NEET 2019 counselling is is done by Medical Counselling Committee which is done to fill the 15% seats of All India quota. Then the further 85% seats are filled by NEET state counselling 2019.

There was two rounds of counselling round 1 and round 2. After NEET counselling 2019, remaining vacant seats are transferred to the deemed universities for final mop up round for NEET UG 2019.

According to official notice the mop up round for NEET 2019 was to start from August 13 to August 15. After that you need to pay the counselling fee until August 16.
The options for filling the locking the choices would be available only for the registered candidates. Then the MCC will release the seat allotments result on August 18. Then if you get a seat alloted, you can go for a dm with the documents as required in NEET counselling.
These mentioned dates might change as they are tentative.

I suggest you to regularly visit the website and check for updates and it would be also uploaded on our website of careers360.
The below given link would help you dither for clearing any of your remaining doubts :

https://medicine.careers360.com/articles/neet-counselling

Good luck!!