A common request is staff wanting changes made to Out Of Office as if they are not capable of this. I have a Solution linking to the MS articles both Web and Outlook client options.

I would like to automate sending this to a requester if their Subject or Description contains "out of office". I looked at Business Rules but this can only do categorization or appears with scripts or something can be more complex.

Notification Rules don't seem to be able to do based on custom text.

How do I achieve this please?