You Sign In to OneSearch with your Empire username and password using the 'Sign In' link in the top right of the results page (in the blue stripe area). Then click "Empire Students" option in the pop-up menu (see image below). You must be signed in to save items for later use, use Inter-library loan, and to be able to see and access all available full-text results.
After you Sign In, you will see your name displayed in the top right of the page. You can then save items to a Favorites list (the "Keep this item" function using the Pin icon to the right of each result on the results page). You can access your saved items using the larger Pin icon at the top of any page within OneSearch. If you click your name in the top right, you'll see options to Sign Out, View Favorites (those items you've used the Pin icon on) or Search History (a list of the searches you've done this browser session, with links to each set of results) and view your Library Card. All other Library Card functionality (Loans and Requests) are currently inactive.