The Select Servers to Monitor window of the Add Servers wizard allows you to select one or more of the SQL Server instances you want to monitor using SQL Diagnostic Manager. If the name of the SQL Server instance you want to monitor does not appear in the list, type the instance name in the space provided in the Available Servers area. You can also designate specific ports for your SQL Server instances by entering a comma between the instance name and port number, for example, domain\instance name, port.
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Access the Add Servers wizard
You can open the Add Servers wizard from the SQL Diagnostic Manager Console menu by selecting File > Manage Servers, and then
Image Added > Manage Servers and clicking Add in the Manage Servers window.