you don't need an addin - outlook understands natural language and can add.

Try using "days before" - i.e., if you need an appointment set for 11
calendar days before June 22, type "11 days before June 22" in the date
field. You can also use shortcuts like 2w for 2 weeks from now - open a new
appointment on May 25 and type 2w and it will move you out 2 weeks.
Note that it understands "before" but not - (minus). It does know + however.
--
Diane Poremsky [MVP - Outlook]
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"BGM" <(E-Mail Removed)> wrote in message
news:09B68269-A419-429A-BC53-(E-Mail Removed)...
> Having searched high & low, it looks like Outlook Calendar does not have a
> built in date calculator - ie, in my trial practice, I get assigned a
> trial
> date and need to calculate deadlines x days prior.
> Can anyone recommend a good Outlook add-in that does this?
> Thanks.