What does self-employment mean?

Can the unit decide whether to recruit employees, how much to recruit and what kind of treatment?

You're in charge. You're asking for it.

For example, institutions are all administrative grants, and they must apply upwards and get approval before they can recruit, so institutions are not self-employed.

The former state-owned enterprises accepted the distribution of college students and did not have the right to recruit independently.

but

At present, most enterprises are responsible for their own profits and losses.

The required positions and benefits are completely determined by the enterprise itself and are not bound by other departments.