On your school portal, search for "School" in the search bar above.

You will then be directed to this page. On the table at the right side of the page, click "Add Row".

You can then enter the details of the icon.
Icon Image - The icon to be used in the login page.
Color - Color of the background of the icon.
Description - Text to be shown upon hovering the cursor on the icon.
Link - Link of website to go to upon click the icon.

After that, you can then click "Save" to apply changes.

Icon in Login page.