In the lens workshop, right hand column, below lens stats and before lensroll, you have the option to max or unmax your lens. Just check the box. They are different lens templates, the biggest difference being the number and placement of ads. Unmaxed has fewer opportunities to make money, but some people like the simplicity of the look.

From the FAQ:

# WHY SHOULD I MAX MY LENSES (and what is the Max/Min system, anyway)?

Introducing the MAX system for lensmasters. Every day, the Squidoo team watches all our lenses, checking out what works and what doesn't. We're busy evolving the site, quietly testing new techniques, trying to figure out how to boost the right clicks (a.k.a., recommendations) from the right people. And we want to invite you along for the ride.

On the edit page for each of your lenses, you should see a check box in the Lens Stats section of the right column. When selected, this "maxes" your lens. When unchecked, your lens will display in "minimized" version. If you choose "Max", we'll take our learning and put it on your lens. Automatically and for free. We won't fiddle with your content--at all--but if you want in on more traffic, new lens layouts, and extra royalties for charity or for you, pick Max.

P.S. Don't fret: If you don't like changes, you're invited to un-Max from your lenses at any time.

When you un-Max (or "min") a lens, it will automatically revert back to the original "min" lens state. You don't have to do anything. And you can always Max it back next week.

Thanks to you both for the advice!