Cannot use Grouped By in Metrics

I'm trying to use the Metrics feature, but there's no button to group by, what am I doing wrong?

Hi @fran
There’s no grouping functionality for Segments or Metrics in the Data Model - that’s up to the user of those Segments/Metrics to add “group by” in their questions.
https://www.metabase.com/docs/latest/administration-guide/07-segments-and-metrics.html

I’ve opened an issue to remove the “Grouped By” text, so it won’t confuse anyone:
https://github.com/metabase/metabase/issues/13167 - upvote by clicking :+1: on the first post

Thank you very much for the clarification!