force Multi hop with xbee

I have 3 xbee s2(one coordinator and two routers). So if I power on xbee I get this scenario

A------>
Coordinator
B------>

But I want this scenario

A----> B----> Coordinator

Is there any way to force that scenario? because I do not want to separe coordinator to A router in order to do a multi hop scenario, I want to force it