Prestashop - How to edit delivery, terms and condition, about us in footer

How to edit the CMS block content for the following link in the footer pages

1. Delivery
2. Legal Notice
3. Terms and Conditions of use
4. About us
5. Secure Payment



Follow this step to edit the content

1. In administration page
2. Go to Preferencess>>CMS
3. Edit each of the content whichever required