How long does it take a good shop assistant to be promoted to manager?

Three months. According to the query of boss's direct employment, a good store needs to recruit many reserve cadres: development path: clerk, manager, manager, and regional manager (the manager can be promoted in the fastest three months). The basic salary of the clerk is 2850, and the average commission of the new store is 4600. Promotion will be arranged every month, and the higher the grade, the higher the salary.