To see the list of available skills go to Configuration > Users > Users Skills. List of Skills is presented in table view with Skill name, edit link, statistics link and delete icon:
Edit Skill
To edit an existing skill, click on Edit link and edit skill name in an opened Edit Skill page:
Delete Skill
AT administrator can delete an existing skill by either pressing Delete button in Edit Skill page, or clicking red cross icon in List of Skills table:
Skill Statistics
To see how many users have a specific skill simply click on Statistics link in List of Skills table. Skill Statistics page opens from where one can also Edit or Delete the skill:
Create New Skill
To add a new skill, press New Skill button in List of Skills page. Specify the name of a new skill and press Create:
To see the list of Users with the skills navigate to Users page.