Set custom policy for mono developer

I have created custom policy for my editor and that work perfect for me. But for each new script I have to apply it manually so that thing irritating me.

So I want to set my custom policy as default policy for my mono developer editor so that each time I don't have to apply it.

Basically I google for this thing but I found that I have to read more for this. So I directly ask here if any body have an idea then please suggest me.