You can submit your EWS certificate at the time of counseling for JEE Main.

Here's how to do so:

JEE Main Application : You do not have to upload your EWS certificate when you are filling out your JEE Main application form.

JEE Main Counseling : When the EWS certificate reaches the counseling stage, the original copy of the said certificate needs to be submitted for verification. Hence, this is the stage at which you can submit your EWS certificate.

Important Points:

Ensure that your EWS certificate is valid and issued by the competent authority.

Be ready for the document verification process during counseling.

Keep track of the updates on the official NTA website and other relevant sources regarding the process of counseling and the demanded documents.

With all these steps, you will be able to receive the EWS reservation benefits while claiming the same when you apply for counseling in the JEE Main process.