This is the housing app, not the lottery, they only use lottery for soph pre re-registration.
You will be selecting building and rooms types, you select 5 and put them in priority order.
There is also a roommate section. You can do it later.
Key is to go through it quickly and get app submitted to get your time stamp. That is the most important thing.
You can go back to application a zillion times and update choices and roommate info anytime before application closes without affecting your submission time stamp.
Merit students are gonna get their building choice, so that’s cool - it’s the room type you are going for by getting in early.
In March it’s an all out battle for everything. 