Chat agent statistics.

Content

I made a report that brings various information about the chat service, detailing chat to chat.
In this report I would like to include a column with the date information of the agent's first appointment with the chat, but not the first appointment of the chat but the first appointment after they entered the filtered queue in the report.

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  EX:

Chat:

08:00 AM. Agent1: hello, how can I help?
08:10 AM. Customer: oi need to change product.
08:15 AM. Agent1: Okay, I'll transfer you to the responsible area.
08:20 AM. Agent2: hello, how can I help?
08:25 AM. Customer: oi need to change product.