I think that this has to be added.
Overtime
Overtime eliminates the possibility of the final sets becoming exhibitions. If the team ahead in the cumulative score wins the final game of the last set, then that team is the winner. If, however, the trailing team wins the final set, the match is sent into overtime and continues until, a) the leading team wins one game, or b) the trailing team ties the match score. If the score becomes tied, the match is decided by a Supertiebreaker.
It is taken from the rules of the official site.
And by the way there is no option for no-ad system in TE. So like Arvin suggested if a player win the point at 40-40 and it is ad-40 for him, then his opponent must give him a free point.