UC financial aid supplemental info?

I have some info that I have no other way of indicating on my application, is there any way to indicate it on a financial aid form (btw I’m class of 2017 applying oos). It’s related to financial aid and such. Do I need to directly contact (bother) the aid officers, or will there be a way to put it directly on the application for aid/ attach it as a supplemental
thanks!