Your calendar and every circle's calendar now work the way you'd expect: you write on the day itself, not in a box off to the side.
Type right into a day
Click any day (or the + that shows up in it), type, and press Enter. The entry lands in that day and the box stays open for the next one, so you can fill a week without leaving the grid. ⋯ adds a time, an end time, a Through date or a note. Click an entry to rename it, recolor it or delete it. Drag across several days to make a span.
Colors that stay put
Pick a color in the row above the month and everything you add stays that color until you pick another. Choose blue and it's all blue. A is the calendar's own color. You can recolor any entry later.
Always current
The month refreshes itself about every half minute, so what someone else adds on their screen shows up on yours.
⛶ Wall screen
On a computer, the Wall screen button turns the calendar into one big month with large type and no side panel, full screen, for a TV or a shared display. Exit wall mode (bottom right) takes you back, and a reload on that screen comes back in wall mode.
Who can use it
These are for signed-in members. Your own calendar is private to you. A circle's calendar is seen only by the people in that circle, and by default every member can add dates and change them. A circle's owner or a moderator can switch that off under the circle's Settings (Members can add to the calendar); then only owners and moderators add, and each member can still change their own dates.
Find yours at You › Your calendar, and a circle's under its Calendar. If something doesn't work the way you'd expect, tell us with Feedback.