What occasionally happens is the CEO introduces his team giving a brief overview of who everybody is. I hate this. I want to hear everybody speak - to get to know the team. What purpose could there be to having the CEO talk on behalf of everybody?
You might say, "it's streamlined, we don't want the intro to take too long." That's an excuse. If you really believe that then just have your team practice their personal intro's and tell them the time budget they have to hit.
I have never done that, nor has anyone that I've worked with. From simple pitches, to sales presentations or big show presentations, everyone who stands by the projector should get a turn to speak. Otherwise, don't bring them along.