How to check an array of checkboxes when a check box is on?
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My heading reads a little weird so let me explain...

I have an array of 3 values represented by one checkbox. 

When this checkbox is on I want to use JQuery to turn the checkboxes below that contain each separate value on. 

In other words, the checkboxes below are each separate element of the array checkbox.

Can someone help me out with how I can do this?

Thanks in advance