When I go into duty finder with one or two of my friends we aren't able to give commendations to the people that went in alone or through duty roulette and I think that's really unfair to punish the people who may be going in by themselves just to get commendations.
I always feel really guilty that I can't give the other players commendations, especially when I end up getting them even though I'm not allowed to give them because I went in with another person.
I think they should change it so everyone can give commendations as long as at least one person wasn't in the premade party, and just make it so you can't give the commendation to someone that was already in your group before you went into the duty.