For most monthly events it is best to use the "n* per week" choices. Using the weekly option you can specify events that occur on the 1st Tuesday of the month or the 4th Wednesday etc,
The "month" option is suitable for specifying a day of the month. In this example we specify and event that occurs on the 12th of each month.
The following repetition types cannot be represented at present. (If you think we are wrong and can think of a creative way of representing any of these in the system we'd love to hear from you).
The last Tuesday in a month (and also second to last etc.)*
The first weekday after any specified date*
The 6th Saturday in a year
Lunar based events such as Easter
If there are other repeat types you would like to see added (only sensible suggestions considered) please let us know.
Also there is currently no facility to adjust or cancel specific repetitions to take account of public holidays or event venues being unavailable etc*.
We hope to address the deficiencies marked with a red asterix (*) possibly as soon as release 1.5.