Parent lock
Editing or deleting chores and events, and changing this PIN, all require the parent PIN.
Profiles
Tap the pencil next to anyone's name on the Today screen to rename them, change their color, or add a profile photo. Use the avatars in the sidebar to switch whose view you're looking at.
Connect a calendar
Paste a calendar's public iCal/ICS link \u2014 Google, iCloud, Outlook, and Yahoo Calendar all have one in their sharing settings, usually called something like "secret address in iCal format." This is read-only and one-way; some providers block direct browser access, in which case syncing will show an error below.
Countdowns
Countdowns only show up when someone's individual profile is selected in the sidebar, not on the "Everyone" view.