It's not clear what you mean by numeral and context settings. I am guessing that you wish to apply Hindi language to one document and have the other, perhaps, in English, i.e., two different alphabets. I believe you need a separate keyboard for Hindi; whether you can use two keyboards with one computer simultaneously I don't know. If you are referring only to setting the proofing language for a document, that is a simpler matter.

Sorry if the question is not clear. As you know, we can choose Arabic, Hindi, Context, and System in the "Numeral" section of the word document (File>Options>Advanced). However, when I select one of them (say Hindi), this setting is applied on the every word file that is opened. My question is how I can have two word files with two different settings in the "Numeral" section, one with Hindi and another with Context?

Thanks