I mentioned in my videoconferencing guide that 5 GHz bands on wifi are vastly better than 2.4 GHz bands. Here's a list of common routers and where the setting is located.
Left pane: General → Network Map Under System Status, choose 2.4GHz or 5GHz tab and enter "Network Name (SSID)"
Settings → Wireless Rename either 2.4 GHz or 5 GHz SSID
Can't do separate SSIDs! Not recommended.
Wireless tab → select Manual → Basic Wireless Settings → 5 GHz Wireless Settings
Linksys Velop (mesh)
Router Settings → Wi-Fi Settings → Show more This will display both 2.4 and 5 GHz options
TP-Link (Blue GUI)
Wireless → Wireless Settings → Advanced Top right: click either 2.4GHz or 5GHz and change SSID name
TP-Link (Green GUI)
Dual Band Selection → Ensure "Concurrently with 2.4 GHz and 5 GHz" is selected On left bar, go into either "Wireless 2.4GHz" or "Wireless 5GHz" and change SSID name
TP-Link (Turquoise GUI)
Advanced → Wireless → Wireless Settings Top right: click either 2.4GHz or 5GHz and change SSID name
Click Devices → choose Access Point(s) → Config (gear icon) RADIOS → ensure Radio 5G is enabled WLANS → click pencil icon to override SSID name (I override my 2.4 GHz network since I consider 5 GHz my main SSID)
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