Orage - how to 'clear' repeated event until the next one?

[Chris Green]

I'm running xubuntu 11.10 and I have started using Orage, I imported my
existing .ics file which went OK which was a good start.

However I have one issue that I can't resolve, maybe it's an enhancement
request.  I have several repeated events which repeat every 3 months
(they are quarterly tax payments).  I need to remind myself about these
a few days in advance so I do the paperwork needed and send off the
money on time.  I have a little python script run via genmon that puts a
warning message in the panel when one of these is due.

The problem is that Orage doesn't offer a way to clear the event without
clearing future occurrences, or at least I don't think it does.  With a
repeating event it surely is a normal requirement to be able to say
"I've done this one, tell me about the next one when it is due".

I used to use reminderfox (a Firefox add-on) to manage the events and
that does offer to ability to remove/turn-off the current/next
occurrence of an event.  Orage is a neater solution in many ways but I
need the ability to clear the 'next' occurrence of a repeated event.

-- 
Chris Green