Many thanks to you both for your advice-Finally got it sorted -and much
quicker!

"JulieD" wrote:

Hi

you can "group" sheets so that a change made on one sheet is made directly
on all grouped sheets.

to group all sheets - click on the first sheet tab, hold down shift, click
on the last sheet tab - or right mouse click on a sheet tab and choose
"select all sheets"
to group selected sheets, click on the first sheet tab you want, hold down
control, click on the next, keep control key down while clicking on the
other tabs to group

once the sheets are grouped, whatever you edit will be edited in the same
cell in all the grouped sheets. So if you make a change in cell C1 of sheet1
all other groups sheets will have the same change made.

NOTE: be sure to ungroup the sheets (click on a sheet tab, or right mouse
click an choose "ungroup sheets") before doing other stuff :)

ALSO please try this first on a back up of your workbook.

Cheers
JulieD




"Graham" wrote in message
...
I have a large workbook of some 50 worksheets.This workbook is used to
mailmerge to Word to produce various documents, so is also set up as a
data
source. Each sheet has a large number of calculations in various columns.
As
I find that I need to amend existing formulae and/or add additional
columns
at times:
Is there a simple way of amending, say Column 1, Worksheet 1, and this
automatically updating Column 1 in all the other sheets - WITHOUT messing
up
any of the important data. I have been doing this by copying my amendments
and then pasting to each succesive sheet, but this is now becoming
unmanageable due to the number of sheets. Best advice please - You've been
very helpful in the past!!