I want to set up a rule that will decline all meeting invitations if I already have a meeting at that particular time slot. I'd prefer to add a custom message to the declination but that's a nice to have more than a need
Ok after some more research I found the way to achieve my goal. There seems to be now way to create a rule that accomplish this however there's a setting the achieves the declination (but not the custom message)
In versions before outlook 2007, the options menu is found under "tools" and you'll have to then select "advanced options"