You can left a feedback after interview and you and your team members (who have according permissions) will see it.
To give a feedback you need to:
Open Candidate profile
Click on Feedback tab
Click on Add feedback
Then you will be able to add a feedback, fill all needed fields and click Save
Then You and your team members could see feedback, with information about:
Given by - who added this feedback
User role - the role of user who added feedback
Date created - date when feedback was added
Applicant status - stage on which was applicant when he received this feedback
And accordingly Feedback