You cannot do so. I.e., you cannot use a newer toolbox for an old MATLAB release. Even if you want only one function from that new toolbox, it simply will not work.
So IF you truly, desperately need some new functionality, you must do one of these things:
1. Upgrade your MATLAB release to the current version.
2. Write the code yourself.
3. Find somebody who has already written what you need and posted it on the file exchange.
4. Find a way to solve your problem in a completely different way that does not use that functionality.
Option 1 is clearly the simplest, but not always an option for all people.
