I have setup tracking of chat interactions with Valero Chat.
Its a case of what KPIs interest and drive your line of business.
We used it to view impact on sales.
We setup events for
Chat started(clicked on chat icon)
Chat initiated(user filled out data and started to interact with support person)
Chat closed (user left the chat after initiating it)
Those events we then allowed to map as evars so we could then see if a user within a tim made a purchase.(allowed attribution towards a sale).
What is your reason for adding the chat?