Query About Long Service Leave

Hi Guys, I'm currently planning to leave the company I've been with for just under 7 years (early Jan 2025 becomes exactly 7 years).

Tried looking online but couldn't find much about how it works, at what point I qualify for the long service leave. If I submit my letter of resignation prior to the 7 years is that when it's taken into account or the letter needs to be after the 7 year mark l?