Overseas, we call it “temporary duty”. Normally it's either staff who are sent from Canada in terms of officer decision-making, or what we call “emergency locally engaged staff”. It may be for 30 days, or for 60 days or 90 days. Actually, we use a lot of emergency LES overseas.
Sometimes it's for peaks in terms of the summer. So you wouldn't need people all year, but in the summer when people want visitor visas, we would add staff.