bus connectivity in dx designervv

Hello,

                       I was trying to make block schematic but the  block page is very big because of  number of differential paris and other nets which vary with net names ,to reduce the size i need to connect the nets with different suffix  with a bus (eg command lines in a ddr bank differ by net names  but i need to connect it with control bus  ) how to connect gorup of nets differ by net names to a BUS? or how to connect differential pairs to a bus?

how to create a block schematic ? can i create schematic with propogation links for nets using dx designer? any one who is intrested please help me

thanks and regards

agxin J