Need some help

1)When is the payment to be made . Is it when you do choice 1 entry or in the college selected. 2) I'm having doubt about choice 1 selection I got the college which I wanted in option entry what is the point of choice entry to me . Is it to confirm my seat. 3) The last reporting day to college is on 09/10/2025 when will the result of choice entry be published. Please help