What a page shows is the sum of three things: views built into Nanodash for that page type, views attached by displays, and views brought by presets. Displays and presets draw from one pool: for each view and page, the newest decision — a display, or a preset assignment — is the one in force. So a later display can switch off a view a preset brought, and a later preset can override an earlier display. The page's About tab lists them all, and says which is in effect.