Claire,
I was searching for it and just figured it out. You just need to change the page type. In order to do this, you go to pages. Then on the page you would like to do that to, click quick edit and then change the template. I recommend full width for what you stated you wanted to do, but would recommend you play around with this and choose for yourself. (I don’t think you need to download anything for this.)
I hope that helped, but if it doesn’t, let me know! 🙂
-Ekam Singh
