The 2017 Oscars was the first I've watched in several years, so I'm not sure how long this has been going on. Kate McKinnon and Jason Bateman presented 2 awards: Best Hair & Makeup and Best Costume Design. There were other pairs who also presented 2 awards, but I can't recall who or which awards.
Why and when did the Academy start having multiple awards presented by the same pair of presenters?