you  are  welcome. yeah that is right  you only need to add the networks attached to that router that  you want  to be  advertised by OSPF.

There are some mistakes in your configuration files First for the IT router You assuming that the router is connected to  network 192.168.1.0 which u do not have in your topology as I can see network 192.168.1.0 0.0.0.255 area 0 ( remove)  network 1...

would you  please send the configuration file and a screen shot of your topology?