This folder is for custom pull request templates. Templates are Markdown (*.md) files.
These custom templates can be used for example, by individual teams to have a custom pull request template with team specific testing or documentation instructions.
Read more in Github's docs
If you update the default PR template, you also need to update the commit metadata in github branch rulesets.
To create a custom template, create a new markdown file in this folder.
Then create a link of the form https://github.com/10gen/mongo/compare/main...my-branch?quick_pull=1&template=your_new_template.md
Share that link in your team docs to use for creating PRs. By selecting an unused values for my-branch it should show a branch selector when following the link.
Read more in Github's docs