Edit the footer

To edit the footer, in the dashboard, in the menu on the left go to File management -> view/edit templates -> affiliatews -> partials -> _footer.twig

You can add or remove a column by adding or removing a block :

<div class="col">
        ...
</div>

Go to http://fontawesome.io/icons/ to find other available icons, for instance if you have an Instagram account :

<a href="https://instagram.com/YOUR-INSTAGRAM-ACCOUNT" target="_blank"><i class="fa fa-instagram"></i> instagram</a>

Please replace https://instagram.com/YOUR-INSTAGRAM-ACCOUNT with your real instagram account.