So PTT is unfortunately a little confusing at first. So I'm just gonna go over the process I tell every recruit to use if they ask. First usually PTT with teamspeak is CAPS LOCK, but also is using your primary short wave in-game. So first have yourself go in game and change your primary short wave from CAPS LOCK to T, to do this go to CONTROLS and in the bottom center is configure addons, from there where is says MRT Accessory functions, just clcik on that and go to TFAR (Usualy grenade is T so i keybind throw grenade to 2X G) from here most people are set up, but just in case I believe to use your secondary radio freq is also T so I change that to Y (this is usually keybound to ZUES, un-keybind ZUES and make it something that you can remember but wont touch on accident)