This could happen, for example when a person has contracts as a salaried GP and as a GP locum; or if the same person had contracts as a practice nurse and a phlebotomist.
Gallai hyn ddigwydd, er enghraifft, pan fo gan unigolyn gontractau fel meddyg teulu cyflogedig ac fel meddyg teulu locwm; neu os oes gan yr un unigolyn gontractau fel nyrs practis a phlebotomydd.