how does tour presale look like?what’s the process?

let’s start with i’m from europe! ofc i know how to buy tickets i just dont know how the presale works. is there a code? a link? how can i access it? i’ve never been to a bey concert unfortunately but i got dua lipa tickets for this year and the presale was just a code and that’s it. it was easy but im wondering how bey’s look like. thank yall🫶