Use course tools>>Virtual Classroom>>Use whiteboard tools
You can modify any object on a whiteboard. To do so, you must first select the object:
Click the arrow tool on the whiteboard toolbar.
Click the object you want to select. When the object is selected, you should see small black boxes around it.
Note: Only one person can select an object at a time. If someone else in the Virtual Classroom session selects an object and then you try to select it too, you will see a message in the status bar that the object is locked.
Do any of the following with the selected object: