Absolute technology illiterate here. We have tenants living with us that use a wifi repeater downstairs. we have split the wifi bands between 2.4ghz and 5ghz to help alleviate congestion. how would we go about connecting a device on the 2.4ghz network directly to the router and not the repeater network that the tenants are using (repeating device is on 2.4). as soon as a device connects on 2.4ghz it directly joins the repeater network and not to the modem itself. any help would be appreciated thanks