Being able to talk to at least two people and say something about them to each others.
You introduce your cousin to a friend by saying “Tom, This is Bill” repeat with your friends name and say something about them.
Look at the two people, say the name of one person and tell him or her the other person’s name, once for each person. Eg. ‘John this is Kate; Kate, this is John’) and say something about them, maybe something they have in common, “you both like chocolate”.