In Baptism, the ordinary ministers are the bishop, priest and apparently the deacon and the extraordinary minister is anyone else.
In Confession, the Eucharist and the Anointing of the sick the minister is the priest.
In Confirmation the ordinary minister is the bishop and the extraordinary is a priest.
In Marriage it is a priest and apparently a deacon as witnesses to the contract of the spouses.
In Ordination it is the bishop.
How did the Church determine this? Through Scripture or Tradition or did the Magistereum make it up?
Why can every one baptize but not administer the other Sacraments?
Why can only a bishop or priest Confirm, when I can lay hands and pray for the Holy Ghost to descend?
Why can deacons baptize and witness marriages?