Below the document is the worksheet register.
A PlanMaker document can consist of multiple worksheets, which are layered like a stack of paper sheets, one on top of another. These are called worksheets. With the worksheet register, you can switch between the individual worksheets in a document, create new sheets, and manage the existing ones.
For more information, see Working with multiple worksheets.
The figure above shows the worksheet register for a workbook with three worksheets. The currently active sheet, "Sheet1", is highlighted.