Hi Yvonne,
Releasing the completed evaluation to an agent is part of the evaluation process. When the evaluator is finished responding to questions on the evaluation form, at the bottom there is a field called "Release the evaluation". This is where you specify when to make it available for the agent to view and to sign-off on their own evaluations. The Engage user role by default includes all of the required permissions for an agent to view and sign-off on a finished evaluation, and to play the associated recording.
https://help.mypurecloud.com/articles/evaluate-interaction/
Hope that helps to resolve the problem.
Best,
Lesley