How to create a trigger to run a process on Sunday every 14 days at 9:00 am

Hello,
How to create a trigger to run a process on Sunday every 14 days at 9:00 am, on the [orchestrator] (Every 2 weeks start on a specific day).
We need a Cron expression solution or whatever.
Thanks

use this site to generate your cron expression.

www.cronmaker.com

Thanks