Operator evaluation software

Hello,

we have FreePBX 16.0.40.11. Our task is to implement mechanism which allows clients to evaluate callcenter operator. After a call is completed and terminated the system should call the client and ask him to evaluate the operator at scale from 1 to 5. This information should be stored and easily retreived for analysis.
How can we achieve this? Is there any modules for that?

Our QM can do that - see e.g. Automating Quality Assessement: post-call surveys | QueueMetrics Blog