You can enable sharing via the Redgate Platform in the options page of SQL Prompt.

When you first enable sharing, you will be redirected to log into the Redgate Platform via your company's usual domain login page. Once logged in, you will be able to use the Redgate Platform from within SQL Prompt.

After you have logged in, SQL Prompt will store a token that will enable it to auto-login for a period of 30 days. Once this token expires, you will be required to log into the Redgate Platform again. Currently, this may occur on startup of SQL Server Management Studio.