The first and usually only step is to download all your transactions from Beaxy and upload them into Koinly. There are a couple of ways you can do this:
If you decide to use CSV files, you need to make sure to import your deposits/withdrawals and trades for ALL years and not just the current one!
That's pretty much it. The only other thing to keep in mind is to tag your airdrops/forks so they show up as Income on your generated crypto tax documents!