Complex sentence: During the ceremony, actor Channing Tatum introduced six young film students from colleges across the country selected by AMPAS as part of "Team Oscar", whose role was to deliver Oscar statuettes to the presenters during the gala.
Split into simpler sentences: During the ceremony, actor Channing Tatum introduced a group called "Team Oscar". The team consisted of six young film students from colleges across the country selected by AMPAS whose role was to deliver Oscar statuettes to the presenters during the gala.