Final answer:
There is no information given about what Steven and Jeffrey do at the graduation ceremony.
Step-by-step explanation:
It is not mentioned in the given information what Steven and Jeffrey do at the graduation ceremony. The information provided mainly focuses on the introduction of a gay couple named Steve and Roger, their relationship, and their plans for marriage. There is also information about Jarrett's graduation and his feelings towards it. Therefore, we do not have any specific details about Steven and Jeffrey's activities at the graduation ceremony.