If you open a model, several panels are displayed. The Designer panels can be displayed on the left and right side of the panes and support the user during modeling. One of them is the Search panel.
The Search panel helps you to find elements on the panes.
The panel is available in the following editors:
BPMN Editor
Execution Editor
Mapping Editor
The search panel is hidden by default. If you use the panel preset, you can find the icon to display the search panel in the right upper corner of the diagram pane.
Click on the icon icon to display the search panel in the sidebar.
To return to the panel preset, go to the user preferences and use the button Reset Panels.