well there are lots of different ways of doing a CV. You should typically put the Chief Position under Postgraduate Training. Though some people put it under faculty positions or honors.
Teaching should have its own section and you should list all the lecturers, courses, seminars, and supervision you provided. Committees should go under service, and can be further broken up into departmental level (i.e. psychiatry), school level (i.e. school of medicine) and institutional level (i.e. university wide appointments). You can also have a section for service to local, national or international (professional) organizations if relevant.
Ask people to send you their CVs and you can get a flavor of what looks well presented and shape your CV that way. That's what I did.