Accessory Tree Operations
When the accessory window is active, you can use the accessory trees to do the following operations:
Navigation—Expands and collapses component, feature, and layer nodes, including Expand All and Collapse All.
Selection—Selects visible or hidden component features, datums, or layers.
Control settings—Sets all the options available in the Settings menu of the main Model Tree or Layer Tree.
Add—Adds a component layer when you click Layer > New Layer.