How to deal with checkbox" or predefined answers CMB fields?

[numeroteca]

Cehckbox
While converting to taxonomies all the CMB fields I found this one "Formally registered", that is a checkbox (convertible to yes/no field) but we should check how data is stored to see how it works.

$prefixwpg es _wpg_

array(
 'name' => 'Formally registered',
 'desc' => 'Select if the organization is officially registered and has legal status.',
 'id' => '_wpg_formally_registered',
 'type' => 'checkbox',
),

Predefined answers
Related question with this other type of answer with predefined CMB answers:

array(
	'name' => 'Internal Elections: how often?',
	'desc' => '',
	'id' => $prefixwpg . 'elections',
	'type' => 'radio_inline',
	'options' => array(
	    array('name' => 'no', 'value' => 'no'),
	    array('name' => 'Quarterly', 'value' => 'quarterly'),
	    array('name' => 'annually', 'value' => 'annually'),
	    array('name' => 'every 2 years', 'value' => 'every 2 years'),
	    array('name' => 'every 3 years', 'value' => 'every 3 years'),
	    array('name' => 'every 4 years', 'value' => 'every 4 years'),
	    array('name' => 'every 5 years', 'value' => 'every 5 years'),
	    array('name' => 'other', 'value' => 'other'),
	)
),

or

array(
	'name' => 'Do you sell to middlemen?',
	'desc' => '',
	'id' => $prefixwpg . 'middlemen',
	'type' => 'radio_inline',
	'options' => array(
		  array('name' => 'Yes', 'value' => 'yes'),
		  array('name' => 'No', 'value' => 'no'),
	)
),

Datetime
¿Cómo convertir estos campos?
Quizás el cuando fue actualizado podemos usar el de wordpress por defecto.
Para los otros evaluar si necesitamos campo múltiple.

array(
		'name' => 'Date of Data Entry',
		'desc' => '',
		'id' => $prefixwpg . 'date_data_entry',
		'type' => 'text_date_timestamp'
),
array(
		'name' => 'Date Data Updated',
		'desc' => '',
		'id' => $prefixwpg . 'date_data_updated',
		'type' => 'text_date_timestamp' //TODO, if this is a multiple data entry, we can not use this type of metabox
),