An easy way to add a border around several objects is to use “Shapes”:
- Select a shape and place it over the objects you wish to place a border around
- Use the “Send to Back” option to place the shape behind the objects
- Resize the shape until it frames the objects as desired
- Set the “Fill Color” for the shape to transparent
- Set the “Line Color” and “Line Thickness” (border) to the desired color and size
