APOLLO Core allows you to edit the default URL of the services.
You can first use the host name parameter in the Core Console to customize the common root of the URLs. For instance, you can set it to: http://myHost/xxxx/yyyy
You can also changing the URL part corresponding the service type. For instance, you would like to change for WMS "/erdas-iws/ogc/wms/" into "something". For that, edit C:\Program Files\Hexagon\ERDAS APOLLO\config\Config.xml and add advanced parameters: