Helix Wifi - Switching from 5ghz down to 2.4ghz

Just in case someone comes across this page and needs the answer. I could not find it for a long while so I used the videotron customer chat to talk to a tech guy. He answered my quetion in one line. 

I had looked all over the App but did not think to check in the Network naming area. I thought that was just for changing the name of the network and the password. But in that area under Networks and tapping on the pencil in the top right corner you can then inside there choose to show both frequencies with their own names and passwords. This solved my issue right away and now I have all my smart devices working again. Simple.