Applying Conditional Formatting without overwriting existing formatting

[TGreenwood]

Good morning

I am trying to set up conditional formatting on a spreadsheet. I've it set up correctly on the top row, and wish to apply it to the rest of the sheet.
However, I don't want to simply drag it down as it overwrites the existing formatting (not conditional).
Is there any way I can get the Conditional Formatting to apply to the rest of the sheet using a method other than the standard copy/paste/Format Painter etc?

Format Rule:
=$D13='Audit Exam task'!$H$3:$H$5

Applies to:
=$A$13:$S$13

I need it to cover every row on the sheet. I am aware that if the formula is true, it will overwrite the formatting, which I am fine with.

Thank you

 

[RoryA]

That looks fine to me then. Do you have calculation on automatic?

 

[TGreenwood]

Hang on a minute! It's suddenly decided to work!
(Think I'm having server issues which might be affecting my work.)
Thank you so much!!

 

[RoryA]

Glad to help.