How would I know whether I should apply under number 3 (full-scale development) or 4 (broad implementation)?
Full-scale development is intended for the development of major NEW deliverables, e.g. TV programs, exhibits, etc. Broad implementation is intended specifically for expanding the impact of deliverables that have already been developed and proven their worth. If you need to clarify this issue, it is important to discuss your particular case with a program officer.