Pick the format that matches your team's situation.
Run a fast, repeatable retro at the end of every sprint.
Run retrospectives that work when nobody's in the same room.
The hour after the page. Different meeting from a sprint retro — different formats.
End of project, weeks of context, half a day. Not a sprint retro stretched out.
The team's job, not HR's. What to run in week one and what to skip.
The function is real. The format is wrong. Run a temperature check and get to the work.
Three formats, ninety minutes, real roadmap. Skip any of them and the kickoff is a wishlist.
Most retro formats break above twenty-five people. The page's job is naming which ones survive.