The Entity Palette lists Entities that are available to be used in the Maltego client. The entity categories can be expanded and collapse using the (+) and (-) buttons next to the category name.
Recently used entities will automatically appear at the top of the entity palette for quick access.
As more Transform Hub items are installed to the Maltego client from the transform hub more Entities will be added to the Maltego client. By pressing Ctrl + F while the focus is on the Entity Palette, a search field will open that allows entity types to be searched:
When you right-click on the palette, options to customize the display will be provided as shown below:
Right-clicking on an entity category will provide a different set of options that will apply to all the entities in the category: