Customers can boost visibility of their high priority roles with Linkedin Sponsored jobs.
All jobs posted through the Linkedin API (via eQuest) are technically eligible for sponsoring.
Customers can explicitly select which jobs to sponsor by logging into Linkedin Recruiter. They can also configure the criteria for sponsored roles (based on function, industry etc.) in Recruiter; if jobs match that criteria they get sponsored as well. All the control is with customer.
For more information, contact your Linkedin account manager.