configure for network segmentaion

I am a noob with mikrotik and I need some help!

I am a Wisp with a Rebel Gateway and 6 t1s..
I have 4 Class C networks.
I want to segment one of my class C into 4 networks at one of my tower sites
so, here goes
i am using a /26
I want a network to be on eth2,3,4 and 5,6,7 are bridged for a single network
I am using a 10.0.0.0/16 network for management

I cannot seem to establish a route between eth2,3,4 or the bridge and the rebel router. The Rebel uses BGP.

How Do I build these routes??
Thanks