The "Evaluation" tab allows you to define whether or not proposals should be anonymous during the evaluation period.
If the option is set to "Yes", evaluators will not see the identity of the candidates for the proposals they are evaluating.
Note: By default, administrators and organizers have the option of evaluating proposals. Administrators and organizers will always be able to see the identity of the candidates regardless of the setting of this option. Anonymity is effective only for users with an "evaluator"role.