Here is how QA Analyst can help the project manager on the project:
You will be more sure about the quality of the software - QA Analyst will test user stories and then regression tests for you
You will have at least a basic set of documentation so you will know what was tested and what is the status of the project from QA point of view
QA Analyst should follow the standard process, so you should get similar outputs from all QA Analysts from QA Team
Since QA Analyst will test the solution, you will have a lower probability that the customer will find major issues during UAT phase
QA Analyst will communicate with the customer about UAT and is ready to help him with preparation and organization - as a result, you should always know where are during UAT and if there are any risks you should be focused on
QA Analyst will help to clarify user stories and acceptance criteria and it can lower risk we deliver something different our customer expected
QA Analyst will check risks from QA perspective for you
QA Analyst will help with the training of the customer about software testing and will be his SPOC for testing during the whole project
Detailed QA activities on the project and expected allocation - the presentation was discussed on PM call 6.5.2020: