meta box

functions.php

/** button actions */
function render_point_actions_meta_box( $post ) {

	// Display the save button
	$button = sprintf(
		'<input type="submit" name="save_custom" id="save_custom" class="" value="%1$s">',
		esc_html__( 'Save', 'iglobes' )
	);
	printf( '<div class="custom-save-button">%1$s</div>', $button );

}

add_action( 'add_meta_boxes', 'iglobes_point_meta' );
function iglobes_point_meta() {

	add_meta_box(
		'point_actions_meta_box', // id
		'Actions', // title
		'render_point_actions_meta_box', // callback
		'iglobe_points', // screen
		'side', // context
		'high' // priority
	);
}

/* 
or, to add to the settings:
in src/models/points.php:80

						'save' => array(
							'type'     => 'callback',
							'function' => 'render_consultation_actions_meta_box',
						),
*/