Put Cat Log on the iPad home screen

Open this site in Safari (not Chrome).
Tap the Share button (the square with an arrow pointing up).
Scroll down and tap Add to Home Screen, then Add.
Close Safari and open the new Cat Log icon.
Sign in inside the app with the café account. The app keeps its own login, separate from Safari, so you need to do this once in the app itself. After that it stays signed in.

Tips

There's no browser back button inside the app. Use the “‹ Back” links at the top of each screen.
Answers save as you tap; there's no Save button. If you see “Not saved”, check the Wi-Fi.
To print a shift record or a weekly sheet, use Open in Safari to print, then print from Safari's Share menu.