To Add a Sheet, go to the bottom right hand side and click the + symbol.

To get to the next page, click the arrow going right or the arrow on the bottom to get to the next page:

If you didn't want this to be copied, here's how to fix that:
- On sheet 1 with Edit All, click on the text in the first label and delete the text, which will also delete the text on the additional sheets.
Switch back to Edit One and type in your text again