Job permissions can be assigned to Job Admin to dictate how much access they have on each job. For example, one job admin may be given access to move candidate's stages, where another may just be able to view candidate details. If no job permission is assigned to a Job Admin / Interviewer user on a job, the user will not be able to access the job.
While Job Admin permissions are created under the Permissions page, an individual user's permissions can be updated on the user page.
Remove a user's permission on a job
Open the user's permissions by navigating to Configure > Users and selecting their name from the list.
On the Edit User page, scroll down and click Add in the Job-Based Permissions panel.
Click the Edit icon next to the permission.
Select None from the dropdown and click Save.