The power relation between supervisors and providers was discussed in all FGDs. An essential form of power available to supervisors is related to PBF rewards, which require regular performance marking aimed to regulate the behaviour of providers. Its flip side is a sense of punishment or conflict when marks are low or rewards lack, as indicated by a supervisor in FGD3: ‘When it comes to the sense of evaluation, conflicts arise. It is a conflict of interest because it involves marks between brackets. It becomes a punishment.’ (S15, male, A0 degree)