You added them in the trigger "Outcome", right after the comment "Moving the heroes to duel arena"?
And a hero actually moved? Because no hero should move if you place them there and no text pops up... I mean, if the unit's name doesn't display, how can the unit move?
In case you placed them as the first 4 actions of the If/Then/Else: DS_AcceptingPlayer2 wasn't set up yet.