Prior to serving as Project Officer (COR/COTR). However, temporary waivers are available. Refer to http://oamp.od.nih.gov/Division/acp/POTraining/generalpo.asp for more information on waivers.
Once. See Refresher Project Officer Training for refresher requirements.
Varies: Classroom training is most common; an on-line module is available.
Varies: $0 on-line; up to $1,000 for classroom training, depending on training source