My wife arrive with me on my Ancestral visa as a dependent, we have been told she cannot work for 6 months, Is this true and if she wanted to work what would we need to do?

What COUNTRIES from and to?

Chances will be that we cannot answer all that you want to know anyway, so make arrangements to sit down with the immigration office with a list of questions.

That visa, (not one used in the US) is used in many Europe nations. Can you give more details.