From what I can find, there is no set amount of time to become a finance director. I have read that if you work in a mid to large size company that you may likely become a financial director within five years.
50 years
You can become a movie director at any time / age etc. You can make a 5 minute "film" about you and your pet and become a "director", its just about being known and getting your films out there!
4 years
Hi. To become a funeral director, you can expect to take courses from two to four years and to work in an apprenticeship for at least a year. The requirement vary from country to country and from state to state.
To become a company director, you do not need specific subjects, all you have to do is form the company or be appointed. To be a good company director, many subjects will be useful. They may relate to communication, management, administration, marketing, planning and forecasting, accounting, and may also be specific to the type of business the company does.
It depends on the individual, their expertise, experience, performance record etc.
54 years.
for 4 years
"How many years does it take to become a chemotherapist?"
How many years does it take to become a cytopathologist?
J. Edgar Hoover was director of the FBI for 37 years, from July of 1935 to May of 1972.