You can place a scheduled job on hold to prevent the job from running. You can also place the entire job queue on hold to make changes to your environment. Jobs do not run until you change the hold status.
To place a scheduled job on hold
On the Job List tab, in the Current Jobs pane, select the scheduled job.
In the task pane, under General Tasks, check Hold Schedule.
The scheduled job is placed on hold. To remove the hold and run the job according to the schedule, uncheck Hold Schedule.
To select multiple jobs, select a job, and then press the Ctrl or Shift keys while you click other jobs that you want to select. This allows you to apply Hold Schedule to more than one job at a time, as long as the state of the jobs are the same.