EndNote for iPad is not included with the UWA EndNote site licence, but the app can be purchased directly from the App store / iTunes
You can synchronise your EndNote Online and Desktop library with your iPad app, add and edit references, and annotate PDFs.
You can't use Cite While You Write (CWYW) with the EndNote for iPad app.
There are lots of video tutorials on the EndNote Youtube channel. View some of them below...
Watch: EndNote iPad: Sync and Settings (video)
Watch: EndNote iPad: Working with PDFs and Searching the Library (video)
Watch: EndNote iPad: Importing References Using the In-App Browser (video)
Watch: EndNote iPad: Importing Records Using Safari (video)