The Sequence folder in the Project tab includes all available sequences. Depending on the Pandoras Box version (please see "Product Overview") you are using as the Master system, you are allowed to create more than one sequence. To do so, right-click on the sequence folder an choose "Create Sequence".
A new sequence with a new ID is created. To rename it, right-click on the new sequence. The other commands available in this context menu are the same as in the context menu when you right-click in the time bar within the Sequence tab. This chapter also explains how to program using the sequence and how to navigate.
Alternatively there are explained in the chapter "Sequence Control". This tab displays all available sequences as large thumbnails. Among others, it enables you, to toggle play / pause of various timelines with one click only.
To view the properties of a sequence select it in the Project tab and look into the Sequence Inspector. It shows all settings, e.g. timecode settings and the Master sequence opacity.