To modify an existing template, visit the Offer Letter section of Hiring Steps and select the template from the list you’d like to edit. You can see how many jobs are currently using each checklist, and choose to archive an Offer Letter if it's no longer used.
Selecting an existing offer letter will take you to the offer letter builder. From here, you can rename, edit, or delete that offer letter template. Clicking Save will update the checklist for all users and jobs currently using that Offer Letter as a hiring step.