What is it you're referring to?
This can be done in tournaments and in team matches alike.
My blog has tutorials about creating team matches and tournaments. It's a little out of date with the recent upgrades, but much of it remains the same.
filter opponents by rating strength
Sort:
And in live (blitz) you can set your min/max rating differential using, for example -50 (min) +200 (max) in the settings menu option and also seek accepts if you look around the interface.
filter opponents by using rating strength