Paragraph 30 of the House of Bishops’ Declaration says this:
Where an alternative bishop is going to provide pastoral and sacramental ministry to a parish, paragraph 26 of the Declaration says that he must be a member of the House of Bishops of a diocesan synod. That means that he cannot be a retired bishop (though retired bishops can of course assist on occasion, as they do now). That in turn means that there must be serving bishops who are not ordained by women and do not ordain women.
Paragraph 30 of the Declaration therefore lays a duty upon the Archbishops to ensure that there is a continuing supply of non-retired bishops who will be able to minister to our parishes sacramentally and pastorally under the Declaration. The arrangements for parishes that are set out in the Declaration assure us that our parishes will have access to that supply of bishops. Without these provisions, we would not have been able to say that our future in the Church of England is assured.
Unlike the Act of Synod, the Declaration makes specific reference to the continuance of the Sees of Beverley, Ebbsfleet and Richborough. The most recent report the House of Bishops (GS 1932) explains in paragraph 23 that the Provincial Episcopal Visitors are here to stay, and that they will still be Provincial Episcopal Visitors.