How long do you have to study to become a manager in a bank?

How long do you have to study to become a manager in a bank?
A bank manager can refer to many different areas. It can be a manager in sales, investment, customer service etc... Different areas would then require different levels of education and professional certifications. Rather, in these management positions, experience is often more valuable than education. The length and level of the studies may only get someone into a position. Afterwards, performance and experience are the major factors of determining whether someone becomes a manager.