A common request that is raised by clients is how to sort a table in Power BI by multiple columns, in the same way you can in Excel.
For a while, there was no way (at least no easy way) to do this until the Power BI March 2020 update.
I learnt this tip from the following YouTube video:
Full credit to Dhruvin Shah, check his video out.
I would call this feature moderately discoverable—once you see how to do it, you can say “Oh, that makes sense.” But it’s not something I would necessarily have thought to do without this prompting.