Where can I set context key for Babel after installation?

I have installed Babel while I have set only two context keys. I can see from http://rtfm.modx.com/extras/revo/babel that it's allowed to set context key while installing. Now I have one more language added and I would like to edit that context key. I hardly find out where the sett up is.

Thanks

I think you should be able add another language in System Setting.

Babel filter

name........................................key..............................value

babel.contextKeys.......................babel.contextKeys..............frenchContext,germanContext,latinContext

Be sure to edit the new language context and toss in an appropriate culturekey