Compounding on an InfoObject that uses a reference characteristic

Hi all,

I am trying to create an InfoObject, say ZSEND_NWA, with a reference characteristic 0ACTIVITY. 0ACTIVITY has compounding on 0NETWORK, Hence, it is adopted by the new characteristic. However, I would like to change the compounding on the newly created characteristic to, say ZSEND_NTW, which in turn uses 0NETWORK as a reference characteristic. This is obviously possible, as 0RECV_ACTVY uses 0ACTIVITY but compounds on 0RECV_NETW which references 0NETWORK. However, I am not sure how to do it as I cannot make changes on the Compounding tab of ZSEND_NWA. Your help is appreciated!

Thank,

John