How do I turn off "Do Not Disturb" on iphone - all the help clauses tell you how to enable, but not how to disable!

How do I turn off Do Not Disturb?

I checked with a friends iphone, and when they open this screen, it just states it is off.

Mine has lots of options, and even if I click all of them as off (half moon is white), the bottom section called "Silence" only has two options.

Either

"Always" on, or " Only while iphone is locked".

And I don't want it on at all.... how do I switch it off... Help!

Thanks