How to only have the Overview page show up as Group top page, not Activity

In one of our social groups, we chose the template for Overview + Activity. We would like the overview page to show up everywhere as the homepage. However, upon a site search, the Activity page surfaces, which really confuses our users and is a bad user experience.

Is there a way to hide the Activity page and only surface the Overview page everywhere the group is linked to?

Thanks,

Shara