To get this working, you must submit the following.
Or are you asking how to redirect your www to the naked domain? This should be done at your server.
In webmaster tools, you should set up every version of your domain, including www and non-www, plus http and https versions. This way you have visibility into what versions of your site are indexed.
Do you mean in the Search Console?
You can't update the URL of a Property in that tool. If you've got the wrong URL, just delete the Property and add the correct one.
To use the search console, go to the old webmaster tools https://www.google.com/webmasters/tools/home and you will see a blue button at the top of the page to try the new search console.
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