Have a look at WS:Repeat Appointment for Outlook at www.websetters.co.uk.
This may assist with your requirement and version II, scheduled for release
this quarter, will definitely enable you to perform the function you
require.

We will be sending out a newsletter to registered and version I licensed
users with details on version II at the end of this week but it includes the
following features.

 a.. All the features of WS:Repeat Appointment I plus
 b.. Ability to mix appointments that meet a pattern with adhoc
appointments. For example you can set an appointment for the first Monday of
each month and then modify with adhoc function to change some Mondays to the
Tuesday.
 c. Specify which days of the week will be part of the repeat pattern, you
can schedule an appointment to occur every 5 days but only include Monday,
Wednesday and Friday in the five day count.
 d. Send invites as well as set personal appointments
 e. Configure up to four time zones so that when an appointment is set, you
can see what time the appointment will occur in each time zone. Ideal for
setting appointments that involve people in different time zones
(e.g.conference calls)
 f. Set different appointment times for some appointments in the Repeat
Group

....and more

The newsletter will also provide details on a free upgrade to version 2 for
all licensed users of version 1.

Register for a free evaluation of WS:Repeat Appointment I at
www.websetters.co.uk or contact us at support@websetters.co.uk if you would
like to receive the newsletter showing full details of WS:Repeat Appointment
II.

Regards
Graeme