Only highlighting a single bullet point

[Daniel Rogger]

Dear All,

I am creating a presentation with bullet points.  On the outline slide, 
I want all but one of the bullets to be dimmed.  Then I want to go on to 
some other slides under that section.  Then I produce a new version of 
the outline slide in which all but a new bullet is dimmed.

Is this possible in LyX?

With best wishes,

Dan