This link gives an overview of transaction consumption based licensing, the license requirements and how to obtain a new license for DevTest 10.4:
https://docops.ca.com/devtest-solutions/10-4/en/administering/license-administration
Please refer to this link as well for Security:
https://docops.ca.com/devtest-solutions/10-4/en/administering/security
Identity and Access Manager is the component that provides user authentication for all DevTest components, including the Enterprise Dashboard.