Hello everyone. Here is another tip.
This time I will tell you how to add model elements consecutively. This is a tip for JUDE Beginners*

When you want to add the same model elements consecutively, just hold the [Shift] Key down then keep clicking on the Diagram Editor where you want to place the elements.

Once you add the element without holding the [Shift] Key down, the focus will go back to the arrow [the most left button] on Tool bar then you will have to go back to the model element button to add more. So by pressing [Shift] Key down, you can save some time off going back and forth on the Tool bar.

For example, this is how you do when you want to add some classes consecutively.

1. Select [Class] on Tool bar.
2. Hold the [Shift] Key down and click on where you want to place Class in Diagram Editor.
3. Keep holding the [Shift] key down and click on diagram editor to add more classes.

This is a very useful technic and cut and save some of your time off.
Also the [Shift] key works in whole diagrams.