Yes, for anything that is 0.5" or thicker, you will need to remove the tray and then prop the object up into a certain zone that the laser beam can focus on.
There are tutorials here that explain what’s going on, but long story short - take the tray out, then put something that is exactly 1" thick underneath the object to prop it up. That will bring it into correct range.
Use the Set Focus tool to set the height after you prop it up into range.