Thanks for the great plugin. It looks like it will save me a lot of time than coding all the custom meta fields by hand.
One issue I'm running into from the Add Custom Meta tab is that there doesn't seem to be a Field Type for a checkbox group.
When I select Checkbox from the dropdown, it just shows a single checkbox with no option to add values. While this would be useful for an "acceptance" field, I actually need to allow people to choose one or more checkboxed in a group with 5 options.
The Field Type "Radio Button Group" does exactly what I would expect by allowing you to input options and values. But of course with radio buttons, the user can only select one option so I need to use checkboxes which don't appear to be offered.
Is it possible to add an identical Field Type but for a "Checkbox Group"?