Epson 440, 600, 640, 700, 800, 850, 1520, 3000, EX User Manual page 33

To set priorities for jobs waiting to print, click the job, then click the
Show details arrow at the bottom of the window.
Priority list box
Settings selected for
the highlighted print
job
Note:
If you see a stop sign icon and the message "Print queue on hold"
in the EPSON Monitor3 dialog box, select Start print queue from
the Printer menu to release the queue and resume printing.
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