3300's.

I have a phone X, that they want to ring after either Y & Z phones have been ringing about 4 times.
I made a multicall key on X for Y and set it to Delay Ring. All set with Y.
Z though, is on a different node.
They are clustered.
I did a DSS key for Z on A but, the only option there is Ring Cont. That works. (I set up the Remote Busy Lamp form)

My question is what is the best practice way of having a phone on a different node, delay ring for another phone that's on a different node?
Is it just within the call rerouting forms?