meaning of 商店助手 shāngdiàn zhùshǒu

I have a new vocabulary word 商店助手   (shāngdiàn zhùshǒu) it is translated as store assistant and seems to literally be the combination of store + assistant. What kind of role is this exactly ? Would this be a regular store employee (a generic term for any store employee)? Is it an assistant manager? Does anyone know?