Those items (with dotted frames) are on the Master Page. The Master Page is where you put elements that you want repeated on each page (to which the given Master Page is/has been applied). To edit them (affecting every applicable page), you have to switch to the Master. (See Pages panel; Window > Pages.) To edit the instance of a Master Page item which shows on your current document page, you must "override" its Master Page item status. To do that, hold down Ctrl/Cmd+Shift and click on the object.
↧