Signal Aspects

Evening all,

Hopefully somebody might be able to help me out.
Currently building a UK based route. Am using a prexisting set of signals available at UKTrainSim.

Now, I have a suitable signal for what I want to do, which is a main arm and a shunt signal. The shunt signal is linked to a siding.
However, in reality the main arm can be used to show a clear aspect for two different available routes.

I can't seem to alter it in a suitable way so that the main arm can be linked in OpenRails to show clear into whichever route is chosen. Any idea if it's possible to do so?
It might be possible to alter the signalling files?

I've included a picture to give some clarification - I hope that helps.



Thanks in advance,

Paul