Just to confirm, are you referring to claim a custom URL for your channel? If so, here's more info from our Help Center article to get you started: https://goo.gl/HB87FX . Let us know if there's anything else!
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
Just to confirm, are you referring to claim a custom URL for your channel? If so, here's more info from our Help Center article to get you started: https://goo.gl/HB87FX . Let us know if there's anything else!