Hi Karlitamaria,
A check box is a form field element, so you would need Acrobat to do that. For more information, see Adding Form Fields with Acrobat XI | Adding a text field | Peachpit
You can download a free 30-day trial of Acrobat from www.adobe.com/products/acrobat.html.
Best,
Sara
[discussion moved to Formshttps://forums.adobe.com/community/acrobat/forms forum]