Hi Yash!

If you have filled your Application correctly for the first time, then there is no need for you to apply again for other sessions! The one Application is enough for other sessions. If you want to attend other sessions, then you can add it to your Application which will be shown to you later during the respective sessions.

If you Application gets rejected due to some reason, then you have to fill another one!

Hope this is helpful!

All the best!