After both employee and manager have shared their assessments, the sign option will appear at the bottom of the review. You'll need to:
- Navigate to the Team view
- Tab to reviews
- Click into the current Review cycle (always on top!)
- Via the "Actions" collumn located in the list of your direct reports, click into to edit a review
- Sign on the bottom of the form.
Below is a gif showing this process and the sign button: