avoid duplicate names in legend

[Khoshravan]

I have 8 series in my chart. (1 x-Series Values, and 8 y-Series Values).
These Eight series are two idential groups. I want names in legend apear
only for one group as they are smae for bouth groups.
Usig same name for both groups, duplicates the names in legend. leaving them
blank doesn't the name but the icon comes which is not good.
Is there any way to show only one group legend?

 

[Khoshravan]

I got my answer through a search in this ng from Mike Middleton to a question
by Neil Golwasser. No need for reply. thanks