How do you lock the Westcott 6" Craft Titanium Bonded Spring Assisted Scissors #15142?

The 15142 spring assisted scissors maybe be locked by squeezing the handles together and pushing up on the lock.  By doing this, the handles will stay locked together.

More product information about the 15142 may be found at the link below:

 http://www.westcottbrand.com/westcott-6-craft-titanium-bonded-spring-assisted-scissors-violet.html