What is the DevTest license structure and where can I find this for our organisation

DevTest 10.4

The DevTest license contract specifies how many different types of users are licensed and how many performance Virtual Service Environment servers are licensed.

The DevTest documentation explains the licensing details here: 
https://docops.ca.com/devtest-solutions/10-4/en/administering/license-administration/devtest-solutions-usage-audit-report/usage-audit-report-faqs 
https://docops.ca.com/devtest-solutions/10-4/en/administering/license-administration 

Contact your account team for questions about your licensing agreement (contract). 
The licensing agreement specifies the following: 
- Number of VS power users 
- Number of Test power users 
- Number of runtime users 
- Number of performance VSE installations. 

The license file and DevTest installation does not restrict the number of users or performance VSE installations, but you are meant to stay within the terms of the contract. 
To monitor your license usage, you can run the license audit report.