Dynamic workflow dates

I’m trying to replicate this post => https://community.hubspot.com/t5/CRM/How-to-set-up-an-end-of-contract-workflow/m-p/456333

Where an email would be sent to the contact 2 weeks before his contact would expire but I don’t know how to set up a relative trigger (the one that relates to 2 weeks before the end date and not to any date in particular).

I found the solution: The workflow should’ve been deal-based

Thanks for sharing the solution with the Community, @VZivkovic!