The technical specialist makes the calls. The technical control provides oversight, communicates with the referee, etc. The assistant technical specialist helps out. In the case of a disagreement there is a vote among the three.
The technical controller can also call a review. In the case of teams, one TS watches the man, the other watches the woman and the tech controller can watch either.

Has she identified her nationality elsewhere?
:yay:
What is your deal? How are DW any less of ice dancers than VM? Who gets to decide whether a team's skating is "true" ice dancing and another team's is not? Last time I checked there was no definition of "true" ice dancing, so it really is a matter of taste/opinion.