While ‘tell me’ takes you directly to a command, it doesn’t tell you where that command is located. What the ‘tell me’ box does, though, is simply to do what you tell it to. You can also choose to look for help on that specific topic, or do a Smart Lookup search instead. If you’d like to know how to justify a group of cells, for example, you can begin typing ‘justify a group of cells.’ Excel will begin making suggestions that change as you continue typing.
But while Bing or the Smart Lookup feature adds context around the phrase in question, the ‘tell me’ box cuts through the numerous menus and submenus.
The ‘tell me’ box is essentially a search box, much like Bing. The ‘Tell me what to do…’ feature cuts right through any confusion in Office 2016.