This page lets to find and edit groups. There are many thousands of groups in LeadScape, most of which are created automatically, so the first step is usually to search for the name of the group. Most groups are named after schools or districts, so to get started try searching for a specific school. If need more help this document will help you understand which groups are created automatically, what purposes they serve and how they are named.
Once you've identified the group. The Admin -> Group page lets yet edit it.