How to improve the level of shopkeepers in Taoxiao shop?

Shopkeepers of Taoxiaopu will be divided into four grades, from low to high: novice shopkeepers, experienced shopkeepers, elite shopkeepers and super shopkeepers, so super shopkeepers are the highest grade. Growth value includes five specific dimensions: performance, user, service, compliance and task reward, which are reflected in performance score, user score, service score, punishment score and reward score respectively.

Joining the store for the first time, the growth value is 200, corresponding to the new shopkeeper L 1. The growth value of 500 can be upgraded to L2 senior shopkeeper, the growth value of 2000 to L3 elite shopkeeper, and the growth value of 5000 to L4 super shopkeeper.