Identify.

Cancelleria relief of adventus of Vespasian, Rome, 93-96 CE, marble, 6.75 ft, found under Palazzo della Cancelleria, Musei Vaticani, Rome, Adventus - arriving as emperor, coming home (presumably after civil way) greeting Domitian, depiction of Roma or Virtus, mix of real people and dieties, some figures taller than others because they are on stools/seated, low and high relief, all coming to and looking at the central group (drawing viewer's attention to them)