Admins are able to add items to the global checklist and metrics lists.  These will apply equally to all circles, as opposed to the checklist and metrics items that are added on the circle tab, which only apply to the circle they're added to.

(See this article for how to add metrics items that apply only to a single circle, and this article for checklist items that only apply to a single circle.)

Global checklist and metrics items are added from the Admin menu.  See screenshot below: