Complex sentence: Rick taunts Thomas over Caroline dating him instead of Thomas and Thomas retaliates by using his position as interim CEO to work closely with Caroline and reassigns Rick to work with Hope on her Hope For the Future Line.
Split into simpler sentences: Rick taunts Thomas about Caroline's choice to date him instead of Thomas, and Thomas retaliates by using his position as interim CEO to work closely with Caroline. He reassigns Rick to work with Hope on her Hope For the Future Line.