Navigate to "Security Management" > "Web Content Filtering" > "URL Category."

Click the "Add" button.

In the "Category Name" field, give your category a descriptive name. For instance, you can name it "My Blocked Websites."

Click "OK" to save the category.

To add websites to your custom category, click "Add URL."

In the "URL Pattern" field, input the URL of the website you wish to block. For example, you can enter .xyz.com. "Click "OK" to save the website to your custom category.

Navigate to "Security Management" > "Web Content Filtering" > "URL Category."

Click the "Add" button.

In the "Category Name" field, give your category a descriptive name. For instance, you can name it "My Blocked Websites."

Click "OK" to save the category.

To add websites to your custom category, click "Add URL."

In the "URL Pattern" field, input the URL of the website you wish to block. For example, you can enter .xyz.com. "Click "OK" to save the website to your custom category.