It sounds like you should put your work experience as a police officer, but if the prompt is too vague you could always call/email the admissions office to clarify.
It depends by school. Some do it as they start rolling in. Some start in bunches in November. Some start in November but review them in order. That is a good question for an admissions officer if you go and speak with them.
I'll be 39 when I start. Leaving a 14 year active duty military career as a senior Non-Commissioned Officer. Hopefully that will offset my rather sub-par GPA.