Hmm I don't know if you can kick someone, but you surely have parental control so if you want to disable internet for computer x from 8AM to 7PM or something you surely can. Or if you want to completely remove internet access for a device, you can. Or you can use MAC address filtering, so if someone connects to your network that is not in the list you made of MAC addresses, the router will not assign him an ip. Hope that answers your question.