1) executive positions, namely heads of BMA agencies and deputy heads of BMA agencies at administrative and departmental levels and other positions prescribed by the BMA Civil Service Commission as executive positions;
2) managerial positions, namely heads of BMA agencies at levels lower than departments and other positions prescribed by the BMA Civil Service Commission as managerial positions;
3) knowledge worker positions, namely positions which require holders of bachelor degrees as prescribed by the BMA Civil Service Commission for performing duties in such positions;
4) general positions, namely positions which are not executive positions, managerial positions and knowledge worker positions, as prescribed by the BMA Civil Service Commission.