its not that simple.......you have to select seperate roes of vertices and scale those to a reference elder mesh.
You can scale males to kids or teen female to adult female with one click but the elder is a total diffrent shape...you can not use that method on a adult to elder conversion.
You can pick one or 2 meshes and i can see wat i can do?
Maybe its wise to try some top and bottom seperates so you can combine them.
Here's a nice mesh made by my partner
http://www.insimenator.org/showthread.php?t=58876I also tried to convert one myself, you find it here:
http://www.insimenator.org/showthread.php?t=81301