It's easy to use this nifty tool. First, decide what type of hole you need to cut. Do you need a rectangular or square hole? Depending on the hole you want, choose the right model to cut your slot. If you insert a socket into the hole, make sure it is the correct size.
The saw blade is compatible with all normal oscillating multi-tools. You just need to attach the saw blade, either the square or rectangular one, and you can use it. With a simple swipe, you'll have your slot ready in no time!