One way, using a helper row...

In row 2 (insert a new row 2 if necessary), enter this formula in B2:
=IF(B1=A1,A2+1,1)
Copy B2 to the right through AZ2.

Select row 1. Select Format Conditional Formatting. Change 'Cell Value
Is' to 'Formula Is', and enter the formula
=(A24)
Click the Format button and select the formatting you want. Click OK and OK
to close the Conditional Formatting dialog. You can hide row 2 if desired.

Hope this helps,

Hutch

"santaviga" wrote:

Dear All,

I have a range of cells. (a1 to az1) these cells will be input with D/S or
N/S for shifts, what I need is a CF format to highlight the cells and bold if
more than 4 D/S are in a row such as D/S D/S D/S D/S D/S in cells A1 A2 A3 A4
A5 these will highlight a colour and bold and the same for N/S also. can
anyone help me on this small problem.

many thanks.

MN