Do I have to submit my common application with additional writings - to all chosen colleges at once?

My question is, do I have to submit my common application + writing supplements to different colleges when completed to all colleges at once, or can I submit just to one and then have time to send to others?

My colleges have deadlines all around in the middle of January, but one of them has a deadline on January 1st. So does it mean that I have to send my all completed applications to all colleges before Jan 1st (because it is not possible to submite just for one?) or can I choose this one college, submit it just to this particular one and then have a few more days to complete applications to other colleges listed on my common app?

I have mostly focused on those to which I have to apply first, because the deadlines are closer. So I have to complete common appliction, but do I have to finish all needed stuff to all my colleges to submit this common app even to this one which has deadline first?

Please help me :frowning:

You submit the common application to individual schools, not all at once.