1. Edit that page's properties (front end, going to the page itself, or from Dashboard -> Sitemap).
2. Click on 'Custom Attributes' tab
3. From 'Custom Attributes' drop down list, choose 'Header Extra Content'
4. Type your <meta http-equiv="refresh" content="0;URL=..."/> replacing the dots with the your home page's URL and Save.
Since you're adding a page refresh meta tag, you better do this from the Site Map so you won't get redirected when trying to 'Exit edit mode'.
2. Click on 'Custom Attributes' tab
3. From 'Custom Attributes' drop down list, choose 'Header Extra Content'
4. Type your <meta http-equiv="refresh" content="0;URL=..."/> replacing the dots with the your home page's URL and Save.
Since you're adding a page refresh meta tag, you better do this from the Site Map so you won't get redirected when trying to 'Exit edit mode'.