People have been asking me recently what overlay I use (I hate overwolf as it has so much crap)
I use TSNotifier from http://tsnotifier.cfxxl.de/
Once installed go to plugins on teamspeak
and enable TSNotifier Helper plugin
Then click "Reload all"
Go to your system tray and you should see the "TS" icon (bottom right here)
Right click this & select "edit gamesettings.ini"
Find your games .exe in this list. If it is not present add it. For War Thunder your looking for "aces.exe"
Either add it or change game.enabled=0 to game.enabled=1
All configuration is done through the right click menu on systray (where "edit gamesettings.ini" was)
In War Thunder I have the speaker posistion to top centre, I used to have just show who was speaking on but recently switched it so showing everyone so I can see who is in channel.