Appeal deadline questions after an unemployment denial - what worked for you?

I got a denial letter last week saying I left my job voluntarily, but I was let go as an IT help-desk technician. I worked as an IT help-desk technician before this. 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.

Legal aid offices and some workforce centres help with unemployment hearings at no cost. A call is worth it.