Can't change wifi channel on the app nor gateway

I read all the articles about how to change wifi channel, but the fact my advanced setting in Xfinity XFi and the app don't have a setting for 2.4 and 5 GHz wifi. Also when I login to the admin gateway, it says that

Wi-Fi Mode, Security Mode, Channel Selection, Channel Mode, and Channel Bandwidth are being managed automatically to help optimize your home Wi-Fi network and improve Wi-Fi coverage.

However, I definiately need to change the channel since my switch does not support the channel that my 5 GHz is on, therefore, I cann't connect to 5 GHz on my switch.