The Forward Deployment Handbook
How you grow
You move up when you are already doing the next level's work, not when a clock runs out. You and your lead track this against the four dimensions in regular one-on-ones, so review time holds no surprises.
Formal moves happen through the appraisal cycle, documented in the Employee Handbook under the Performance Appraisal Policy.
Being stronger on some dimensions than others is normal. The four are a guide for the conversation, not a checklist to tick. What matters is the trend, and the scope you can own.