Originally Posted by caddyshack

No, the system will not allow you to e-upgrade a deadheading/positive space staff.

Jazz pilots hired before a certain date in 2013 will be guaranteed Y and eligible for space in J should there be space available when the flight closes. Newer Jazz pilots (hired in 2013 until now) will be in Y 99% of the time as they aren't entitled to J unless the flight is crazy full or some other miracle happened. Same rules in regards to Y/J class go for most of the other Jazz staff (FAs, mechanics, etc.) that are traveling positive space.

Gate agents would technically be able to change their seat up to J if they wanted, but with the new Amadeus system, every keystroke is closely monitored (unlike the old RESIII) and I'm sure it wouldn't go unnoticed by those up the food chain.