Qualifications can be setup in the system and then added to each person as a history of each qualification they have attained. Multiple entries can be added for each person, as they become qualified and then later re-qualified.
Qualifications can either have an expiry date - that is, once that date is reached the qualification is no longer valid, or alternatively be entered without one in the instance that a qualification doesn't expire.
Click here to view more information on adding qualifications to peoples records