Wireless router traffic monitoring for different users

Dear all, I have a wireless router standing in my home and neighbours would like to surf on it as well, which would be fine for me. However, where do I find a router traffic monitor that shows me which computer has been online at which time with how much bandwidth used?? Tried Wireshark, too much information and too hard for me to understand. Maybe you know of a simple solution for me to monitor how much bandwidth which user uses... thanks so much