You can make a turtle do something special whenever you click on it. For example, a turtle can start moving when you click on it or grow in size. These special instructions must be indicated in the turtle's dialog box.
Create a turtle using the “+” menu and right-click on it. In the turtle’s dialog box, click on the On Click menu and choose the name of the existing procedure or New if you don’t have a procedure to be executed yet. Then click Apply to close the dialog box.
In snort, to make your turtle do something when you click on it, you need to arrange the instructions in the form of a procedure and assign this procedure to the turtle.