The simplest way is rather tedious, but easier than it was a couple of years ago. You'd have to make sure you've clicked on "Add to Want List" from the Collection Summary page. Then you'll have to click on the filter to select each team you wish to include and click on each card you need individually.
But, not there is no mass add you can do if you only want to segregate by team.
Follow my blog - I Identify as a Card Collector.
“Aslan didn't tell Pole what would happen. He only told her what to do. That fellow will be the death of us once he's up, I shouldn't wonder. But that doesn't let us off following the signs.” - Puddleglum in The Silver Chair by C. S. Lewis