Language Management in Office Applications

Hi,

I use Word and PowerPoint to create documentation for different countries, who speak different languages.

I have found extremely difficult to make Word and PowerPoint understand the Language I am using in the current document. Let me unroll it:

1. On one hand, there is the "Office Language", which is how I want Office to show itself, meaning, the tabs, the options, the commands, etc. Of course, I want that in my native language.
2. On the other hand, we have the language check and correction setting, which basically means in which Language I am writing at the moment.

Point #1 is not a problem. We are OK with that. But regarding Point 2, it is really difficult to make Office Understand that, for instance, in one document I want to work in Spanish, and in other I want to work in English.

I know there is an option in the "Review" tab that has a "Language" button, where I am supposed to set the preferences of language. However, this button never seem to work! For instance, if I have a document in English, and I select English as my "creation and check" language, all the English words still appear as unrecognized, and even Office automatically changes the words that somehow resemble a correct word in Spanish (since my system language is Spanish).

Probably the automatic change can be changed somewhere, but that is not the main issue. What I would like is a simple button that unambiguously sets the language of the content that is created.

I hope to have been clear with my question, and if I am ommiting a command that would solve the issue, please let me know.

Best regards,

JC