This is a temporary work-around for the Advanced Custom Fields Wordpress plugin's lack of support for blank meta boxes. A feature request for this was made on the plugin's Github page.
- Modify the code for your specific application.
- Place in the field instructions field.
- Set Options > Style = No metabox (Unless you want nested metaboxes. Not tested).
- Save/update your custom fields page
- ???
- Profit.
The example below was built for an FAQ field of type "repeating". Delete what you don't need.
SO USEFUL