Complex sentence: At the church's April 2014 General Conference, Callister was released as a general authority and from the Presidency of the Seventy, where he was succeeded by Lynn G. Robbins.
Split into simpler sentences: At the church's April 2014 General Conference, Callister was released as a general authority and as a member of the Presidency of the Seventy. He was succeeded in the Presidency of the Seventy by Lynn G. Robbins.