Salutations,
I'm not exactly sure what you're attempting to imply by "control a mouse click", however in the "event structure" area there is the option to have responses fired when mouse clicks occur; controlling both right and left mouse clicks. This isn't always the most pleasureable way of doing things, because it refers to any click. You might be able to set it up to ensure only clicks in certain areas, however this will take some research on your part. Just look through how to control event structures, the mouse option is under the "this vi" (or so i believe the name goes) section.
Best of wishes,
ElSmitho