Are you speaking of the men who were dressed in purple cassocks and white surplices at the Masses and seated on either side of him? They are the Papal Master’s of Ceremonies - Msgr. Marini, the MC and the assistant MC’s (I only saw two and don’t know whether any others came along) - Msgr.Krajewski and Msgr. Millea
His secretary was also there, but for the Masses, vested as a priest.
(They are all priests)