Hello there

See, firstly you have to complete your registration process and you have to do your registration for this exam from the official website of NTA. After completing your registration process you will be getting an acknowledgement slip which you have to save into your device.

Now coming to your doubt, before the examination you will be receiving your admit card and that admit card will be available on your profile which you have used for the registration. Now on to that admit card all the details will be mentioned about the centre examination that where you have to go to give your examination and most probably it will be from your first priority which you have selected during your registration process. It can be a school or any online cyber or any institute.

I hope it helps you!

Good luck!