The Processing Panel's central list details the batch jobs. Information includes name, state, progress, machine on which its running etc. Hover the mouse over a job for a tooltip to appear with more complete information.
Jobs are presented in the order they were submitted and this is the order in which they will be run. Pressing the Up button moves the selected job up the queue; Down moves it down the queue; Pause will halt the selected job if its running and thus allow a different job to run; Resume will resume a previously paused job; Cancel will remove the selected job. Run ASAP will pause any running jobs and move the selected item to the top of the queue thus ensuring it will be processed as soon as possible. Details display comprehensive information on the selected job, which can also be accessed by double clicking on a job.
If a batch job relates to the non-current project, then it is shown as being greyed out and can not be interacted with unless the Manage all projects button is pressed.