Add People Tags to identify skills or other unique characteristics for people in your account. You can search these tags or skills in Reports and the Approvals page.
To increase the depth and usability of employee profiles by adding properties like skills, certifications, managers, and organizational structure, use Custom Fields.
Some examples of People Tags are:
Only Administrators can create and add People Tags to a person's profile. People can have multiple tags, which can be created in your Account Settings > People Tags, or on the Edit Profile page.
NOTE: If you delete or update a People Tag in Account Settings, it will be removed or updated for people who have that tag.