How can I see single user traffic?

How can I see single user traffic?

Hello, I've installed NFA, but I think i've configured it in a wrong way:
I've been downloading hundreds Mb from Microsoft site, but all traffic from this source is seen to go to external IP address, not to my pc address; to be correct almost all traffic from outside goes to my router's external IP address.
How can I configure NFA to show how many Mb I've been downloading, and from where I've been downloading it? I think it's quite strange that I cannot see it...

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