Good morning aspirant,
Your question is not clear.
Are you asking about the counselling details.
If yes,then here it is,
It depends upon the respective college.All colleges have set different criteria. One college will allow to keep 4 branch as your specification on the other hand other College allows 5 branch for your specification .
When you will open the site of the college.
You will find an Register option
Then you have to do the payment.
Then you have to fill personal details.
Then you have to submit the application.
Then you have to do the certificate verification.
Then the counselling process will start
Then seat allotment will start
Thank you
Hope it helps.

Hey Goutham,
Hereby I am providing you the link for the enginewring colleges in Tamil Nadu.

www.engineering.careers360.com/colleges/list-of-engineering-colleges-in-tamil-nadu

Anna University conducts Tamil Nadu Engineering Admissions (TNEA) for undergraduate admissions in colleges of Tamil Nadu. As per the latest notification, TNEA 2019 Registration has commenced from May 2, 2019.

Candidates seeking admissions in theinstitutes of Tamil Nadu for B.E./ B.Tech programcan apply online latest by May 31, 2019.

TNEA 2019 Eligibility Criteria must be checkedbefore filling the online application form.

Only one application per candidate is allowed.

For further information regarding registration you can check the link given below or you can comment below.

www.google.com/amp/s/engineering.careers360.com/articles/tnea/amp

All the best.