Enable the TCP/IP on the general tab and then add the individual replicas on the Alias tab.
If you add an alias to force the connection to use TCP, make sure you set the instance name on the end of server name if using a non-default instance.
NOTE: May have to use fully qualified name of SQL Servers.
Here is a query you can use to find out if named pipes is enabled:
SELECT 'Named Pipes' AS [Protocol], iif(value_data = 1, 'Yes', 'No') AS isEnabled
FROM sys.dm_server_registry
WHERE registry_key LIKE '%np' AND value_name = 'Enabled'
UNION
SELECT 'Shared Memory', iif(value_data = 1, 'Yes', 'No')
FROM sys.dm_server_registry
WHERE registry_key LIKE '%sm' AND value_name = 'Enabled'
UNION
SELECT 'TCP/IP', iif(value_data = 1, 'Yes', 'No')
FROM sys.dm_server_registry
WHERE registry_key LIKE '%tcp' AND value_name = 'Enabled'