How To Post Job?
In order to post job user will need firstly to register account as Client and only then you will be able to post a job.
Find out more about user roles: User Roles
Find out more about client frontend administration: Client Frontend Administration
If you are site administrator then you can post job too from backend.
Find out more about client backend administration: Client Backend Administration
When you post a job its single page page will be automatically populated and users be able to find it on certain places on website like single page, locations page, categories page.
Locations Page & Categories Page