I want to change the select box created with the CakePHP bake command to a check box.

I created the form using the bake command in cakephp.

I'd like to change the multiple select boxes to check boxes.

When I looked at the source, the following command generated a select box:
How can I change this to a check box?

$this->Form->control('cours._ids', ['options'=>$cours]);

Thank you for your cooperation.