You shouldn't need to if you have two SSID's, one for 2.4 and the other for 5.0.
I was told by friend that he had to log in to router administrator/password to install his identical system. ?
If you mean security camera, try it and see.
You can temporarily disable the 5 GHz WiFi band so that the mobile you are using for setup only connects to the 2.4 GHz band. Please follow these steps for it:
1. From a computer or device connected to the Gateway, open an Internet browser and access the Admin Tool at http://10.0.0.1.2. Once logged in, select Connection and then Wi-Fi.3. Select EDIT at the end of the row for the 5 GHz Frequency Band.4. Select Disable and then SAVE SETTINGS.5. Complete set up of the device using the device app 6. Go back into the Admin Tool and re-enable the 5 GHz band