CustomPress - Edit custom field placement in admin area with conditional logic

How or where do I add conditional logic to custom fields while editing a Post (admin area)?

For example, a specific 'city' field will appear depending on what 'state/province' the admin chooses. I'd also like to arrange the fields (see attached image).

Thank you, and I apologize in advance if this question is a little elementary. I've been digging for awhile with no success.