Headset
To connect your headset to the wifi, press the oculus button on the right controller to bring up the universal menu.
Use the controller to point at the wifi symbol and pull the trigger to select.
Select the wifi network you wish to join and enter the password.

Tablet
iPad
Swipe down from the top right corner.
Select wifi network and enter password.
Android (Samsung S7)
Swipe down from the top of the screen.
Select wifi network and enter password.