Is there a way to mass change task due dates?

I generally have several tasks due today. However, I may only fully complete
one or two of them. I want to mass change the others so that they are changed
to the next day, next week, etc., without going into each one individually.

I can't find any standard functionality for this. VBA may be my best hope,
but I am not sure how to program this in Outlook. I am experienced with VBA
in Excel, but not in Outlook.

Thanks!