When you create a new job, it will have a default recruitment pipeline that works for most cases and companies. However, if you need to add or remove stages or edit the names of the recruitment stages, you can do so by navigating to your Job Settings -> Workflow configuration. There you can add or remove stages and edit the names of existing stages. You can also select from a list of templates with common recruitment workflows.
Please notice that once you receive applications, you can no longer make changes to your recruitment pipeline.