Complex sentence: As of March 26,2011, he has been assigned to serve as the mission president of the Canada Vancouver Mission; he has left his practice to fulfill this assignment, which will end in July 2014.
Split into simpler sentences: As of March 26,2011, he has been assigned to serve as the mission president of the Canada Vancouver Mission. He has left his practice in order to fulfill the assignment, which will end in July 2014.