Commands and a list allow to modify the name and the place, the periodicity, the begin time, the duration and the type (for tasks), the start and end dates.
Periodicities are provided: daily, each working day , each rest day, each week, each two weeks , each month ( same number of days that the start date) , each monthly rank ( same day of the week and same rank week in the month , unless the rank is 4 or 5, then it will be the last occurrence of the day in the month).
The action bar or options menu also allows to display the help screen .