Okay, imagine you have Sheet1, Sheet2 and Sheet3 and you want to
reserve row 1 in each of these sheets for headers so that your data
goes in to row 2 of Sheet1. If you want this to be copied automatically
into Sheet2 and Sheet3, you would have a formula like:
=IF(Sheet1!A2="","",Sheet1!A2)
you could put this formula in cell A2 on both Sheet2 and Sheet3, and it
will reproduce whatever is in A2 of Sheet1. The formula can be copied
across the row to pick data from B2, C2, D2 etc of Sheet1, and then all
of these formulae can be copied down to pick up the data from rows 3,
4, 5 etc and you can copy the formulae down for as many rows as you
need.
If you now add some data to row 20 in Sheet 1, for example, this data
will automatically appear in row 20 of Sheet2 and Sheet3, so you don't
need to insert any new rows, and it will not overwrite any existing
data.
Hope this helps.
Pete