if i have understood your network and ip address schema correctly, from remote office in 192.168.1.0 subnet, you would need to put static route for 10.0.0.x network towards the HO and on the HO routers you would need another static routes pointing for 10.0.0.x and 192.168.1.x at the right places.
Finally assuming there is a default route from the 10.0.0.x site to the HO, it should be all good.
if you can give me the ip addresses of the interfaces, i could give a brief syntax.
HTH.
Cheers,
Mohit