What does it mean to "implement personnel agency management" in the recruitment of logistics posts in a university?

The personnel agency is not established, and the salary varies a lot. Generally speaking, it is a contract worker, that is, a temporary worker. I am a personnel agent, and I work in the school. Although the reform of public institutions will not change in a short time, there are no specific implementation regulations. It is recommended not to be a personnel agent. Of course, the income of personnel agents in some schools is almost the same as that in some schools, but this is a minority.