To add a shortcut using an iPhone, follow these steps:

1. Open the site https://sfbb.defpress.com/ on your phone’s default browser such as Safari or Chrome.
2. On the browser window, click the blue circle arrow that points down; it’s on the left
3. Then click the ellipsis on the right
4. Then click “Add Bookmark”
5. Finally check “Save”; use defaults for text and location

Android steps should be similar. Ping me if you need any help. – df