With TS you have channels. Everyone in the channel hears you talk. There are a ton of ways of configuring it though. If you want to talk directly to one person in the channel, you can do that too. I race in an endurance league and we have password protected channel for each team. We also have a commentary channel that the commentators use. Any talking that goes on in the commentary channel is heard on our live video broadcast. Drivers can also join the commentator channel too but will not be allowed to talk until they are given permission by the commentators. Drives can jump into that channel when their stint is done if they want to do an interview. The admins can also talk and be heard by all the channels, even private channels. So if there is an important anointment to be made, the admins can do it.
TS is very flexible.