The 9-Box Potential Rating Scale is visible in the Review Form Sections of performance cycle setting.
Navigate to Admin > Performance > Cycle > Create Cycle > Review Form Sections
Step 1: To make 9-Box Potential Rating Scale visible, Enable Employee Leadership Potential.
Step 2: After enabling Employee Leadership Potential, you can Allow Employees to view their potential rating if necessary.
Step 3: Employees can view 9-Box rating scale once their appropriate manager has completed the review.