Concourse & Jira Cloud Portal
That little "+" menu from which you create Work Items, RAID items, etc., should also have a "Create Stage" button. I've been clicking around in the interface for 15+ minutes trying to figure out how to make and manage Stages, and I'm not finding it. Going to have to ask somebody who might know.
Great minds think alike, bryce.hart@pwc.com! We're excited to let you know that you can now find the create stage functionality directly on the Plan page. To navigate there, on the left side pane, select the Plan page > click the "+ Create" button > click "Stage". Try that out, and let us know what you think!