This is an individual delivery, each student has to deliver their own solution.
Focus is on reflection and providing feedback on the system specification of another team.
Address all relevant issues you find.
Pay extra attention on the team's request for comments and feedback.
See if you agree or disagree with their own evaluation.
Try to be as direct as possible.
Be constructive and try to suggest improvements. Focus on that the feedback is useful to the team. It should improve their next delivery.
You can weave your feedback into the team's own reflection, in Word format.
It's okay to include screenshots (maybe partial ones) that you annotate if that makes things easier. (Then you may need more space than indicated above.)
The feedback you give is not anonymous. This is on purpose, so a team might ask you for clarifications (though this is probably not necessary).