You can delete a job by using the right-click menu option available at the job. You can even delete the jobs by using the taskbar and the Tasks menu.

You can delete multiple jobs of the same type. You can delete only the user-defined jobs.

For example, if you select two asset import jobs, the delete option is enabled. If you select asset import job and data collection job for deletion, then the delete option is disabled. These jobs are not deleted because the jobs are not of the same type.