Complex sentence: The publication is currently managed by Joseph Dumbula, who at 21 years old, made him the youngest editor and manager of the publication having joined Malawi24 as a reporter in 2014 when he was 20 years old.
Split into simpler sentences: The publication is currently managed by Joseph Dumbula, who at 21 years old, made him the youngest editor and manager of the publication. He joined Malawi24 as a reporter in 2014 when he was 20 years old.