In addition to the standard features, you can use the Overview panel ( You can use the Overview Panel to navigate in your BPMN model. The panel displays your model and a blue frame, representing the content shown on the diagram pane. If you wan to quickly change your working location in large models, you can move the frame to change the visible part of the model. You can use the Overview panel to zoom in or out of the model. Hover over the right bottom corner of the blue frame. The cursor changes and you can resize the frame.
) in the BPMN editor.
Overview
Content Tools