Hello,

You are right because this option is available in Magix Music Maker 16 Premium.

MMM 16 Pdf Page number 24 clearly says

Additional features of the Premium version
Additional audio effects
"Elastic Audio" for total control over vocals. Voice samples or
melodies you sing yourself can be "tuned" to match automatically.
With the "Harmonizer" in the Elastic Audio Editor, you can add a
suitable second vocal or a whole choir to a specified melody.

But if you use MMM 16 Premium check this tutorial

How to make interesting audio effect(Elastic audio)
http://www.magix.info/us/how-to-make-interesting-audio-effectelastic-audio.online-training.72462.html

Thank you

nihon94