How do I change the WiFi network for Joule?

To change which WiFi network Joule is connected to (these steps also apply for WiFI password changes):

Verify that Joule is plugged in and connected.
Launch the Joule app and proceed to the main menu (tap the three horizontal lines in the upper left).
Tap Settings > My Joules > [Joule name] > Disconnect Joule from WiFi [access point name].
Tap Okay to disconnect.
Tap Connect Joule to WiFi and choose your new WiFi access point.

Watch the video below to see how it's done.