I have an Excel sheet with data already in it. Now, I need to add another
sheet below that one with a new title on it. I want to be able to add to the
previous data above without having to insert rows everytime I need to add.
How do I first add a new title and then make it add lines as needed?

Kinda confused as to what you are asking. Excel doesn't allow you to
add a sheet to another sheet. However, a single workbook can contain
several sheets. You can append exising data to a sheet by copying it
from the original location and simply plugging it in where you want on
the destination sheet.
Rachael wrote:
I have an Excel sheet with data already in it. Now, I need to add another
sheet below that one with a new title on it. I want to be able to add to the
previous data above without having to insert rows everytime I need to add.
How do I first add a new title and then make it add lines as needed?