How do I make changes to the right sidebar in admin? I cannot find any access when I go into the customization page. The steps I’m taking are: in the admin page I click the preview changes tab, when the preview opens I then click the customize button at the top of the page, this displays the customizing menu on the left but I find no link to customize / change the right sidebar. The other issue is how to change the information in the footer for all pages.