Your productivity rating will be visible to your manager. This will help you and your manager to evaluate your productivity from time to time. You can check-in your productivity before or after your 1-on-1 meeting.
Open your upcoming 1-on-1 meeting with your manager. Check-in your productivity from the productivity rating pop up and choose the appropriate reason as well.
Alternatively, you can also check in your productivity by clicking on 'Rate Productivity' that's located next above Shared Notes box.
You can also share productivity check-in through the reminder mail sent to you a day before your 1-on-1 meeting.
Here's a gif to show you a glimpse of productivity rating: