To see the list of participants in a Microsoft Teams meeting, all you have to do is click on the “Show participants” option in the meeting control. However, if you want to see everyone in the meeting on video at the same time, here’s what you have to do: 1. During the Teams meeting, click on the three vertical dots in the Teams window's top-right corner. 2. From the pop-up menu, select the "Large Gallery" option. That’s all there is to it.  Teams support up to 49 meeting participants at the same time.