I am using the plugin wp-multi-network(http://wordpress.org/extend/plugins/wp-multi-network/) to maintain child networks under multi site.Using this I can create child networks.But I can’t set sign up functionality to child networks .And If the main network is mainnetwork.com and childnetwork has the domain like childnetwork. mainnetwork.com .The sites set under this child network would not get the domain as site. childnetwork. mainnetwork.com .

Does any body have Ideas to get these functionalities? And does any one w’d like to share your experience and the knowledge you have with this plugin?

The child networks childnetwork1. mainnetwork.com and childnetwork2. mainnetwork.com also should have the sign up functionality .If I want to give a complete access on childnetwork1. mainnetwork.com to a person 'X' or group "X group" .X can able to use it as his own blog network and he can let others to create blogs same as me.So I still have control on that child network and at the same time X acts as super admin for the blog network.

The basic purpose of the wp-multi-network plugin is the same.But presently one cannot able to set signup functionality to child networks .