Appeal deadline questions after an unemployment denial, social media manager here

I was told my separation was for misconduct, which is not what happened. There are 3 people counting on me, so I am trying to be careful. The letter lists a deadline and a hearing process, but it is hard to follow. If you have appealed before, what helped you prepare?

I printed my emails in order and wrote a one-page timeline. The hearing officer kept going back to it.