How four Admirals could operate with carriers

How would four completed Admiral-class battlecruisers have been employed?

They could operate in hunting pairs or as fast leaders and heavy escorts for carrier task forces, with major consequences for carrier speed requirements.

Four Admiral-class ships would alter treaty tonnage and probably force retirement of older 13.5-inch ships. Operationally they could work as hunting pairs or lead carrier groups, but carrier doctrine would then demand unusually fast flight decks able to turn into wind, launch aircraft, and regain station with a 32-knot capital ship.