In calendar, custom repeat of items such as diary meetings does not work. I tried to set for 4-week repetition as my work roster repeats every 4 weeks but sometimes the repeat did not work at all, other times, the repetition was not exactly 4 weeks (even did it if I set 28 days). In addition, several all-day events now spread over 2 days unless I specify the time. Calendar on my phone does not allow custom repeats so I have to do this on-line (unsucessfully at the moment)