Open a browser and log into your hub 192.168.0.1 - you need to use the settings password on the base of your router (8 numerical characters) then navigate to the following settings so you can differentiate between the signals.
Advanced Settings > Wireless > Wireless Signal > click on Disable Channel Optimization then scroll down and click on Apply Changes.
Now go to Advanced Settings > Wireless > Security > add a 5 to the 5 GHz Channel name and click on Apply Changes.
You can leave the passwords the same as they are. Then log out of the hub at the top of the page.
You will need to reconnect all you Wi-Fi devices some will want to connect to 5Ghz and some to 2.4GHz and some will connect to either.
The 5Ghz channels have a stronger, faster signal, but the signal doesn't travel as far.
You could also do a search for an app such as wifi analyzer or inssider which tells you the strength of the channel you are connected on, and also shows other channels so you can decide if you want to change the channel number on your hub
Advanced Settings > Wireless > Wireless Signal > beneath both the 5Ghz and 2.4GHz sections click on the manual button, and in the drop down box click on the channel number you want to change it to, then scroll down and click on Apply Changes.
The Service you do for others is the rent you pay for your room here on Earth - Muhammad Ali