Complex sentence: The series was originally set to debut on NBC on April 7,2016, however it was later revised to premiere after "The Voice" as a "preview" it will then debut in its regular Thursday at 10:00 PM timeslot on April 14,2016.
Split into simpler sentences: The series was originally set to debut on NBC on April 7,2016, however, it was later revised to premiere after "The Voice" as a "preview". It will then debut in its regular Thursday at 10:00 PM timeslot on April 14,2016.