Sometimes you always want to load a number of stencils, the shapes that you use every day. From the Manage Startup Stencils menu just add the stencils that you want to use. You can delete the ones you no longer require by selecting them and clicking the Delete button. A stencil can also be temporarily prevented from being opened by turning off its check mark. You can also prevent any of the stencils being opened by setting the Active tick box to unticked.