I cannot add a new Server Role "SQL Server 2008 R2" I want to add a new user-defined Server Role to my SQL Server instance, but the menu doesn't show all options, it only shows this:



Instead of this :



and I also tried the T-SQL command to create the server role but it keep showing the message 


  Incorrect Syntax near 'AUTHORIZATION', expecting id ,quoted_id or to.


Please Help ASAP.
CREATE SERVER ROLE only apply to SQL Server 2012 through current version.

See on MSDN: CREATE SERVER ROLE (Transact-SQL)