Julie, Welcome. You’ll need to look through the templates and see how they are constructed. If the person who built the site used layouts, embeds, or partials for the footer section, then you may only have to update one location. Otherwise, you’ll just need to find where they added the footer
section. There’s a search function in the template manager to search all templates. Start with the template docs to understand how they work: https://docs.expressionengine.com/latest/templates/overview.html .
A couple other good resources would be Justin’s article on understanding templates from his Intro to EE course: https://u.expressionengine.com/course/introduction-to-building-an-expressionengine-site/templating-intro-templates-template-groups-staying-dry, and Doug’s Templating lesson if video is more your thing from his Intro to EE video course: https://u.expressionengine.com/course/getting-started-with-expressionengine-video-course/getting-started-with-expressionengine-using-file-fields-part-2-templating. hope that helps.
What version of ExpressionEngine are you using? You can find a version number somewhere at the bottom of every control panel page.
Your login may not have permission to view templates in the control panel (I suspect this is the case). Do you have the ability to make yourself a super admin at all?
If you can find what version of EE you’re running that would be a start.
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