You do so using Frames or using the GroupName property (altough it depends
on the type of OptionButton that you're using...)

This explains it more in depth:

http://www.dicks-blog.com/archives/2...ption-buttons/

--
Regards,

Juan Pablo González
Excel MVP

"Mario" wrote in message
...
How do you separate option button series? For example:
One series is a yes/ no and another is monthly/quarterly/annually.