Hey thanks for asking and bringing this up!  We currently do not support this feature, but we are taking it into consideration for future development.
Anyone familiar with how to make Dell Command Update display install and restart deferral notifications on the screen until they are dismissed?  In my testing it appears the notifications only show up for a few seconds then disappear into the notifications area. Of course this would be unacceptable for a notification that's telling the user their computer will reboot itself in x number of hours unless they defer the notice.  I've read through the settings document though and so far I'm not seeing where to set this.
Dell Command Update - How to make notification's stay on screen until dismissed?