Dependent List in Custom Fields

[chriswow16]

I'm looking to add a couple new custom fields, one for a department and one for a job title. Both of these will have a list box.

I want the department I select to affect the available options in the job title list.

So imagine I have 2 departments and 10 job titles:

If I select department 1 I want the list under job titles to only show me 1-5

and if I select department 2 I want the list under job title to only show me 6-10

Is this something that has already been implemented? I'll actually have around 10 departments and 50 job titles and I just don't want to have super long list with similar/confusing job titles.