Jay,
If I understand you correctly:
Highlight the cells in Column B and select: Format > Conditional formatting
> click the arrowhead in the "Cell Value Is" and select "Formula Is" then
enter the formula:
=SUMPRODUCT((B2<>"")*(SUM($B$2:B2,$D$2

2)>1)*($A2=A2))
Click on the "Format" button and select "Patterns" and select the colour you
want. Click OK > OK.
Highlight Column D cells and repeat the above but use the formula:
=SUMPRODUCT((D2<>"")*(SUM($B$2:B2,$D$2:$D$2)>1)*($A2=A2))
If you enter the percentages for any person that adds up to more that 100%
then that cell that takes you over 100% will be highlighted with the colour
you selected.
If you would rather prevent people entering the value then use the above
method but select Validation form the Data menu instead of Conditional
formatting form the Format menu.
--
HTH
Sandy
In Perth, the ancient capital of Scotland
and the crowning place of kings
(E-Mail Removed)
Replace @mailinator.com with @tiscali.co.uk
"The Fool on the Hill" <(E-Mail Removed)> wrote in
message news:3233F748-E7AB-4B1A-B9F1-(E-Mail Removed)...
> Dear Excel(lent) users,
>
> I want to add up percentages:
>
> I have 4 columns (A, B, C, D). In
> A: Name of a person (selectable from validation list)
> B: Percentage
> C: Name of a person (selectable from validation list, same list as A)
> D: Percentage
>
> You can select a person and add a percentage. This means that one person
> can
> be selected multiple times.
>
> I know want to control, that one person is not going to exceed 100%. Is
> there some formula for this?
>
> Thanks for helping me out !
>
> Kind regards,
>
> Jay
>