Sorry for the delay. If your channel was eligible and applied before June 1st, your application has been reviewed and you'll be receiving a Creator Studio update and email over the next few days. Here's more info: https://goo.gl/2icqfh
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more