This requires clarification, but I propose multiple editors could mark target pages on this list with a letter as follows:-
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a) Where a new page name/title is desired, once the new content is ready, moving the old page title to the new title, and then pasting the new content over the old, is best for preserving the full history of that page concept.
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b) Obsolete themes and content can be moved to the background in explicit 'Obsolete' or 'Archive' subpages, e.g., Activity Team/Obsolete, Archive/Current Events.
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c) Copy the new version to the current version of the target page.