Sometimes you may want to create more than one Class in a diagram continuously, but each time you select a Class and click on a diagram, the selection on toolbar always goes back to the left arrow, and you have to select a Class again and then click on a diagram to create another one.

Well, there are two ways to cut the hassle and save your time.

Method 1 : Using [Lock Selected Mode]
In each tool bar there is a [Lock Selected Mode] button on the right side.



So turn this button on, and then select a model element and create it. While this [Lock Selected Mode] is on, the model selection on toolbar stays on where it is and won't go back to the arrow button automatically.

Method 2 : Hold [Shift] key down
Another way to do is, simply hold [Shift] key down when you click on a diagram to create a model. By doing so, the selection on toolbar will stay whatever it is selected and you can create the same model elements in a row.