Filters within reports, accounts list, Sales Outlook and anywhere else there are filters in Matrix, there can be more options underneath the main group. To access the Subgroups:
1. Click the filters that you wish to view the Subgroups.
2. Click the black triangle to the left of the main group. This will open the sub filters under the main one.
3. Clicking “None” will deselect all options allowing you to select a single option quickly without having to deselect one at a time.
If you would like to learn more about the grouping feature, please view this article: Monarch - Hierarchy Grouping options