For draft versions of all models, it’s fine to use a simple drawing tool, or draw them on paper or on a whiteboard. You can take a picture and post these for your team members to see. Just make sure they’re legible and neat. You’ll redraw them more than once. When you submit the final versions, draw them in Visio or another drawing tool. When you submit them for grading, submit them as a PDF or image files (i.e., JPEG or PNG, etc.), NOT a Visio file.
TIP: Microsoft Visio has a library of shapes specifically for UML Diagrams. In the left-hand Shapes box, click on "More Shapes >> Software and Database >> Software. There is a collection of pre-set shapes for each type of UML diagram we draw.
Start with a template such as this, and modify to suit your project. Drop fields that are not needed and add fields that are.
Note: You may not have much, if anything in the “normal flow of events”, “subflows” and “exception flows” sections of the use case description template given in Chapter Four in your book.