To add a widget area on Drupal 8, follow these steps:
1. Log in to your Drupal 8 website and go to the dashboard.
1. Click on the “Structure” tab in the menu and select “Block layout”.
1. Click on the “Custom block library” tab.
1. Click on the “Add custom block type” button.
1. Enter a name for your custom block type in the “Label” field.
1. Select “Widget” as the block type and click on the “Save and add fields” button.
1. Enter a label for your field and select the “Text (plain)” field type.
1. Click on the “Save” button.
1. Go back to the “Block layout” page.
1. Click on “Place block” in the region where you want to add the widget area.
1. Select your custom block type and click on the “Place block” button.
1. Enter a title for your widget area and click on the “Save block” button.
Your widget area is now added to your Drupal 8 website. You can customize it further by adding content and changing its display settings.
