If you enter data in PlanMaker, it is always inserted into the active cell. A thin dark frame, known as the cell frame, indicates the active cell:
You can move the cell frame to another cell as follows:
Mouse: Click on the desired cell.
Keyboard: Use the arrow keys of the keyboard to move the cell frame.
Via keyboard is also possible: Use the Tab key to get to the next right cell and Shift+Tab to the next left cell. Press the Enter key↵ to move down and Shift+Enter to move up.
A list of available keys can be found in the section Shortcut keys.