Spoke to Spoke connection

Hi,

I have a "central" site X to which 2 remote sites A and B are connected using IPsec site-to-site tunnels.

Both site A and site B can communicate with site X, but not with each other.

i.e. traffic works in A<->X, B<->X but not A<->B. I can obviously create anoter tunnel between A and B to get them to talk to each other, but instead I'd rather they go through the central site X since they're both connected to it.

Is there a way to set this up in EdgeMax?

Thanks,

Danny