The Russo Family Jerry and Theresa are parents to Justin,Alex and Max. before they got married wizards can't date mortal so Jerry gives up his powers and gave it uncle Kelbo who had won the family competition.
Family competition is a contest for wizards to keep their powers and with one siblings gets to be a full family wizard gets unlimited powers.
Each wizards gains levels to advance their training to enter the family competition.
Only One wizard get to keep their unlimited powers.