To change a tool’s size or color, or to add an effect, double-click on the tool’s icon.Once the drawing tools are available, you can click on any pen tool at the top to use it, and if you’d like to switch up the types of tools you have available, click the Add Pen button.To switch modes, select View > Print Layout from the menu bar at the top of the screen. If the tools in the Draw tab are grayed out, it means you’re using the wrong editing mode.