In Administration - Device Settings, in the Ready to Print tab, you can configure the expiration period before device spooled jobs are deleted.
In the Expiration Period field set the time you want in minutes. The minimum is 10 minutes and the default is 240 minutes.
Click Save all in the upper-right corner to apply your changes.
In case you want to remotely register and log in to a device, click Open Device Code Page to get redirected to the Device Code page, where you can insert your device codes.