There are two ways to do this:
Option 1: When you are on the report printing window and have the report highlighted you want to create a shortcut for, just click on Create Shortcut. It will then proceed to ask you which tab you want to save it under, then once you choose, it will be on that tab as a shortcut for you.
Option 2: You can drag and drop on the tab you wish to create a short cut. On your dashboard, click on the dashboard icon, then choose the icon to drag and drop, (the dotted rectangle, then click on the report you want as a shortcut, then drag and drop. Then choose save.