To store the site as a favourite, first of all go to the login screen, but do not login. Then:
Click the star icon located in the right hand side of the address bar. If you cannot see the Bookmark menu, click on Chrome’s menu icon, select “Bookmarks” and make sure “Show Bookmarks bar” is ticked
Click the star icon located to the right of the search bar.
Select “Bookmarks” or press “CMD + D”, then “Add Bookmark”.
Click on the star icon.