The footer for this theme has a few options for customising. You will not be able to add your own pages but on adding a contact page, Twitter link, Facebook link, terms and conditions or privacy statement page, the corresponding links will appear. If set your charity number will also be added.
All of these can be added in theme options apart from the compact page link. This is added by setting a page template to contact page. For this reason only one page should use this template at any one time.