What are the duties of an archbishop

The bishop of the more important cities, or of historically important places, is given the title of Archbishop, to show a level of seniority or honour.
 From the original Greek word for ‘overseer’ (episkopos) we get the English word ‘bishop’. Ever since the beginning of the second century, every portion of the Catholic Church, or local area called a ‘diocese’, has been headed by a bishop, who has the duty to teach, sanctify (meaning, make holy) and govern God’s people. 

This is what i found on google “eightin 1997, the mccaughey septuplets were born in carlisle, iowa. multiple births of as many as eight babies have been born alive, the first set on record to the chukwu family in texas in 1998; one died and seven survived. in 2009, a second set, the suleman octuplets, were born in bellflower, california.” i was surprised about this . i don’t want to have that many babies .