You can create additional groups within any group category.
Creating a new group enables you to customize the settings for a group of managed objects. To create a new group, you can:
Copy an existing group. The new group contains the same settings and thresholds as the original group. Matching criteria are not copied.
Create an empty group. The new group does not contain any settings or members. You must add settings and matching criteria, and set the priority of the new group.