VOICE MESSAGE IN CHATS ON WINDOWS PC CONFUSION

Apparently there is some sort of setting for windows that you have to enable but im so lost for whatever it is and i cant figure out how to add sending voice messages in a chat on my server which is something that is requested often, and i swear i have looked for how to get this in my server for those who dont use mobile and im just completely confused by why i cant figure out what to do, it doesnt make any sense