Outlook automatically change reminder based on category

Question

I need to automate Outlook so that when a user sets a certain category on an appointment, it automatically sets the reminder time based on the category.

For example, the user has an "On site meeting" category and an "Off site meeting" category. He wants the reminder time to automatically change to 15 minutes for an on site meeting and 30 minutes for the off site meeting. He understands that if he sets the category wrong or applies both categories the time wont change correctly.

Is it possible to do this, and if so how do I go about it? I imagine there is an event I can catch and handle when an appointment category is changed.

Thank you

EDIT: The appointment requests are received in email, he sets the categories when he accepts the meeting request. The reminder time should be set whenever the category changes. How to hook up to the event is the part I can't seem to find.

Answer 1

When exactly is the change of reminder time supposed to happen? When initially composing the meeting? Whenever categories are modified?

(e.g. if the user already set a value for the reminder, and then changed the category, would the reminder change?)

Anyway, I guess the solution is to hook up to some events that happen in Outlook and set these values according to your logic. But until the above questions are answered it's not clear which events you'll need to hook up to.