Multiple wi-fi credentials

How do I setup multiple Wi-Fi credentials, so every time I move to another Wi-Fi spot DietPi will connect to it itself?
Also, if I don’t get the Wi-Fi available at that place, then I’m plugging in the ethernet cable, but most of the times it does not autoconfigure via DHCP.

Before DietPi I could use wpa_supplicant, but here we have GUI for that and advised NOT to edit this file manually.


Your wish have become true since DietPi v159:

you can do what ever you want to do, but if you edit configs by hand, you can’t use menu (GUI) for setup your wifi any more.
And some dietpi-software, like WiFi-Hotpot or TOR-Spot, which depends ain dietpi-config defaults, will not work any more.
So you will be alone now …

Great, thanks!