From the article:
The people you work with, your friends from school, your family, the guys from football training? They are all different groups of people. Sure, they are already stored in your People Hub, along with everybody else you’ve ever met or randomly follow on Twitter, but make those small groups of people easier to find and connect with.
To do this, you must first navigate your way to your People Hub. Now, press the plus symbol at the bottom of the screen and you’ll be asked if you want to add a new contact or a new group. Here, we’re going to press new group.
Giving the group the correct name is important, especially if you’re going to be creating several groups. If you’re looking to put all the guys from the pub into one group, you might consider calling this group The Lads, or The White Lion (the name of the pub). Once you’ve found the appropriate group name, just hit add a contact beneath the group name. Find all the people you want to put into the group and press the save icon to save that group.
You’ll now have an overview of who’s in the group and the options available to you now. Live Tiles of the people will flick into action in the main section with the added options to send everyone a text or an email at the same time underneath the tiles. This is great for communicating to everybody in the group at once. “Get the beers in. I’ll see you all at 8!” is the perfect text to let your mates know what time you’ll be at the bar.
Nice job, guys. This is also one of my favourite features of Windows Phone!
If there's another aspect of Windows Phone which you think deserves our tutorial attention or perhaps clarification, then do please comment away.