To obtain a multi-site license you must negotiate a special offer with italinux, the developer of add-on Banner.
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The lazy banner is really a recommendation. Works fine. I had a little issue but Matteo solved it in no time.
With this add-on you can add wide areas such as Banners onto your website.
It provides a wide header with a background Video (on / off) and a few other features. It's ideal to impress your audience with a unique opening to your site.