The correct option is inside a directory named workflow-templates within the organization's .github repository. This is the required location for organization wide starter workflows so that repositories in the organization can discover and use them from the Actions new workflow experience.

GitHub reads starter workflow YAML files and their metadata from that location. When you place your templates together with the required properties file there, they are automatically offered to all repositories in the organization. This enables consistent bootstrapping and easier adoption.

inside a directory named .github/workflow-templates is not recognized for starter workflows. GitHub does not read templates from a nested path like this so the templates would not surface to repositories.

inside a directory named workflow-templates within the current repository limits visibility to a single repository. Organization wide templates must be stored at the organization level so this option would not make them available across the organization.

inside the .github/workflows directory of the current repository holds runnable workflows for that repository rather than shareable templates. Files here execute in that repository and are not presented as starter templates to other repositories.

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