If you want to add the same elements to all website pages at once, you can do it through the settings of the included areas.
Configure a site template
For example, let's set up the same header and footer blocks for our website pages.
First, we need to create two pages, as each area is a separate page.
Here is the page with a header block.
And another page includes only a footer block.
Then go to the Sites page, click the three dots button, and select Configure site from the dropdown.
Scroll down to the Site Template section. Select a template and specify the pages to be placed in the areas by clicking the arrow button.
Click Save at the bottom.
The added areas will appear on all website pages.
Configure a page template
You can configure a template for a separate page that will differ from your site template.
Access the desired page setting using the actions menu.
Enable Apply to this page in the Page Template section.
Then select a template and configure the areas.