Participant is not able to calculated overall rating or see comments and rating given by employee

Hello All,

I have a requirement where in participant should be able to use the calculate overall rating based on the rating given against each goal and see the comments and rating given by the employee.

While creating participant role there is a check box "Allow role to view worker, manager and participant ratings, comments and questionnaires"

1. When the check box is checked.
   System doesn't allow participant to calculate the overall rating based on the rating given against each goal.
2. When the check box is not checked.
   a. System allows participant to calculate the overall rating based on the rating given against each goal but it does not display the ratings and comments given by the employee.