For Chromium Browser on Desktop:

1. Launch the Browser:
   Open the Chromium browser on your computer.
2. Access the Settings Menu:
   • Click the three-dot menu icon in the top-right corner of the browser window.
   • Choose "Settings" from the dropdown options.
3. Navigate to Privacy Options:
   • In the left-hand sidebar, click on "Privacy and security."
   • Select "Site Settings" under this section.
4. Adjust Notification Preferences:
   • Scroll down to the "Notifications" section.
   • Locate the site you want to stop receiving notifications from, e.g., sample_domain.com.
   • Click on the site name, then select "Remove" or "Block" to disable notifications.

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For Chromium Browser on Mobile Devices:

1. Open the Browser App:
   Launch the Chromium browser on your smartphone or tablet.
2. Enter the Settings Menu:
   • Tap the three-dot menu in the top-right corner of the screen.
   • Select "Settings" from the menu.
3. Go to Notification Settings:
   • Scroll to the "Advanced" section and tap on "Site Settings."
   • Then, open the "Notifications" option.
4. Modify Notification Permissions:
   • Find the website you want to manage, such as sample_domain.com.
   • Tap the domain and choose either "Block" or "Remove" to stop notifications.

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Additional Tip:

If managing notifications through the menu doesn’t work, you can use the direct settings link. Open the following URL in your browser and replace example_domain.com with the website you wish to manage:

chrome://settings/content/notifications?search=sample_domain.com

Remember to substitute the example domain with the specific site you want to modify. From this page, you can customize or remove notification permissions for any site as needed.