After you've turned on numbering or bulleting, you will notice that a number or a bullet appears at the beginning of the line that holds the insertion point. Type the text for this numbered or bulleted item.
Press the Enter key to begin a new line. The numbering (sequentially) or bulleting continues with each subsequent line. Just add the needed text and press Enter whenever you are ready to move to the next new item in the list.
You can turn off the numbering or bulleting when you have finished creating your list. Click the Numbering button or the Bullets button, respectively, on the Formatting toolbar.