A custom URL can be used with one piece of content at a time. For example, if you assign the custom URL /yourname to a piece of content, you cannot assign that URL to another piece of content or to a meeting, nor can any other user who shares your account assign that URL to anything. If you delete the content that uses the custom URL, the custom URL becomes available for reuse.
If another user is currently using the custom URL, you receive an error message when you enter the URL. If you want to, you can check with your administrator to see who is using the URL.
Custom URL rules: