Is it possible to to make a wav voice alert tone for apointments, ex: ( 5 mins to your next apointment Chad)

Also same idea for text messages
ex: ( You have a new text message Chad)

I feel like you are able to specify which tone to use for each delegated alert... Is this correct?

Is there a quick and easy way to set up a diffrent type of ringer for unknow/unavailabe/restricted caller ideas from the regular caller id ringers?