Thanks Rolf, no need to apologise! I agree the available space could be used better.
At the moment, the Calendar uses the maximum number of overlapping appointments anywhere in a day to determine the width of every appointment that day. That’s why your isolated Monday appointment stays narrow even though the space beside it is empty.
I’ve logged a feature request to improve both Week and Day views. Isolated appointments will use the full width, and overlapping appointments will expand into neighbouring unused columns wherever they can do so without covering another appointment.
