hello aspirant,

after locking your choices you will notice that their is this option of respond to queries in every round. in this you they can ask you queries if in case , related to your document if they need to know and you have not provided them the relevant information and in a same manner you can also seek them for your queries.

I have attended UPSEE counselling and I also came across the same procedure bt this respond to query is not anything that you should worry about.

Hope it helps!