http://help.sap.com/saphelp_nw70/helpdata/en/c4/3a5ed1505211d189550000e829fbbd/content.htm
You could try out this link. This explains how to add an instance to the CCMS configuration.
http://help.sap.com/saphelp_nw70/helpdata/en/c4/3a5ed1505211d189550000e829fbbd/content.htm
You could try out this link. This explains how to add an instance to the CCMS configuration.