The Group tool is a very useful way to keep everything organised when creating more complicated designs.
HOW TO USE THE GROUP TOOL:
1. Use several shapes and position them however you want.
2. Select any shape, click the menu button (three horizontal lines), then click the Group button (the chain link) icon.
3. Select all the shapes that you want include in your group, then click Ok.
4. Your shapes will now stick together, and transform as one group when you move, resize, or rotate the group.