To enable live chat translation for your agents you need to go in to your bot settings as an Owner to enable it.
There are two translation providers available right now:Now that we've chosen to enable translation within the bot, its up to each specific agent to turn it on.This is done via the live chat settings "incoming chats":Each agent can choose its own language to be translated and if the history should show it as well.Once activated, you can individually choose to have the chat translated or not on a conversation basis.You can disable it via the three dots on the bottom left of the chat window:
Customers can disable it via the widget on the three dots like shown on the picture: