Some years ago, Redding, et al, directed that all UNS that occurred in the same 'event,' even if there were multiple distinct acts, were to be penalized with a single distance penalty. The example used at the time was a player that scored a TD then threw the ball into the stands as he ran toward the stands, then jumped up into the stands to let the crowd slap congratulate him, then dropped back onto the field and gave the 'throat slash'. All three of those items are in the same 'event,' so there would only be a single distance penalty. If he then ran to his team area, then came back on the field, ran to mid-field and stomped the opponent's field logo, that would be a different 'event,' and would earn another distance penalty.
Similarly, if several teammates performed some sort of choreographed "bomb burst" outside their team area, that would be a single 'event,' that would only yield a single distance penalty.
Now, the two-UNS and out penalty came along during my 'absence' from the game, so I honestly do not know for 100% certain that each participant in a multi-participant event would be charged with a UNS. Most likely "yes," but someone else will have to confirm (or deny). Same for whether or not multiple acts by a single player during the same 'event' would yield his DQ - I honestly don't know, but would think so. Someone else will have to confirm (or deny).
Robert