He also rigidly formalised the "cursus honorum" by clearly stating the progression of office and associated age requirements. Next, to aid administration, he doubled the number of quaestors to 20 and added two more praetors; the greater number of magistrates also meant he could shorten the length of provincial assignments (and lessen the chances of building provincial power bases) by increasing the rate of turnover. Moreover, magistrates were barred from seeking reelection to any post for ten years and barred for two years from holding any other post after their term ended.