In Outlook 2016, the Tell Me function can be accessed by O pressing F1 on the keyboard.
clicking on the File tab, then the question mark button.
typing a query in the textbox on the ribbon.
typing "help" in the search box in the message pane.

In Outlook 2016, the Tell Me function can be accessed by

O pressing F1 on the keyboard.

clicking on the File tab, then the question mark button.

typing a query in the textbox on the ribbon.

typing "help" in the search box in the message pane.

Explanation:

I think it should be typing a query in the textbox on the ribbon.

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