This is how you do it
Open your catering administration in the phone's browser and log in.
On iPhone: open the Share menu with the square and arrow and choose Add to Home Screen.
Select name and add the shortcut.
Open the shortcut and check that it shows the correct solution. Microsoft's login policy may require re-authentication.
See screenshots from the original guide (7)
The screenshots are from the previous guide and may show an older user interface.
