How do you make something bigger on sketch up?

To make an object bigger in SketchUp, select the object using the Select tool (the arrow icon). Then, activate the Scale tool (the box icon with arrows) and click on a corner handle of the bounding box around the object. Drag the handle outward to increase the size, and hold the Shift key to maintain the object's proportions while scaling. Finally, click outside the shape or press Enter to finalize the transformation.