Online Documentation for SQL Administrator for SQL Server
Setting server role properties
Use the Properties tab of Server Role Editor to create/edit a role and specify its properties and membership.
Name
Enter a name for the new server role, or view the name of the role being edited.
Owner
Select an owner from the drop-down list of logins.
Members of server role
Add members to the role, i.e. add logins that will inherit the permissions of the role.
To add a login, you need to move it from the Available Principals list to the Selected Principals list. Use the buttons or drag-and-drop operations to move the users from one list to another.