Jellico: How many duty watches does the crew stand?
Riker: We have a standard three shift rotation.
Jellico: I'd like to change that to four starting tonight.
No, it is a suggestion because he's not in command. Note, once that Jellico arrogantly dismisses Riker's concerns after he is in command, Riker immediately impliments the order he has now been given by his commanding officer, despite his reservations.
IMO, the fact that Jellico continues to run roughshod over the crew and endanger the crew and the ship with his reckless and arrogant micro-managing proves that Riker was in the right the first time and while legally in the right the second, was morally and ethnically wrong.
Now, Riker did eventually lose his temper with Jellico and go out of line, but note that that didn't have any to do with Jellico's commanding of the ship but rather his callous but perhaps necessary conduct of the diplomatic negotiations.