Multiple currencies assigning

Hi Experts ,

I am working with a manufacturing company and co.code currency is INR. I got an assignment to add GBP,USD,and EUR to add to some of the GL accounts..Is it possible to add with a GL accounts. No I guess.I think we can do it only through FS00..Can anyone share your knowledge with me to get it fixed.How can I assign multiple currencies to a co.code so that they can post the entry with any of these currencies.?

Your concern in this regard is appreciated.

Regards

Shyam