Add New Skill Group will open the list of group headers. Select the group from which you wish to add a skill and then click on the gear button.
Fill in the appropriate information as described in previous section and click Save, or click Save and Add Another if you want to add multiple new groups.
Delete Group Header and Merge Up will delete the group header, allowing the sub-groups and/or skills underneath to become sub-items under the next higher group.
In this example there are too many groups named Effort so we will remove some of them. Click on the gear to the right of the lowest level Effort group.
The result now is shown.
Repeating the process for the second Effort group we finally have:
thus having eliminated two levels of group headers.