***Select whole mesh, sub-mesh or group** by mouse activating this checkbox; or
* choose mesh elements with the mouse in the 3D Viewer. It is possible to select a whole area with a mouse frame; or
* input the **Source Element IDs** directly in this field. The selected elements will be highlighted in the viewer; or
* apply Filters. **Set filter** button allows to apply a filter to the selection of elements. See more about filters in the :ref:`selection_filter_library_page` page.