Connecting 2.4g security camera to my R6400 Smart duel band router

[HANKO20]

I have new sercurity cameras that only accept 2.4g wifi, How can I get the cameras to connect to my R6400 smart router?

[plemans]

The R6400 is dual band so it has 2.4ghz. 

Many security camera apps don't get coded properly. 

Saying that, simply connect your phone/tablet/pc/whatever you're using for setting up the camera's to your 2.4ghz signal then try setup.