Job Duties and Characteristics:Is the KSAO necessary prior to hiring, or can it be trained?

Job Duties and Characteristics
Use either your current position or a position you would like to obtain to create job duties and at least three KSAOs (knowledge, skills, abilities, and other characteristics).

Is the KSAO necessary prior to hiring, or can it be trained?
What is the importance of each characteristic relative to the others?
What is the approximate time the employee will spend on each duty?