Adding organization administrators is simple and will allow you to grant a higher level of permissions to different folks in your organization.
To add an organization administrator, head over to the Settings tab and click on Administrators.
Manage organizational admin access by adding an existing group admin from the drop-down, or invite a new organizational admin using the blue button.
The full list of organizational admins can be found here and options for each admin can be selected by clicking the ellipsis (...) and then selecting to remove them from organizational admin responsibilities and access. This change will apply to their account immediately.