The tree shows the tree structure of all the objects in the project.
Various objects can be created under a designated folder.
For example, a "Cue Sheet" object can only be created under a "Cue Sheet Folder". Also, a "Cue" object can only be created under a "Cue Sheet" object.

For more information about this hierarchy, see Tree edit .
Each object can be created mainly from the context menu that appears when you right-click. Objects can also be created on the timeline from the context menu.