You start by completing a short questionnaire about your event; CoreRated then uses deterministic logic to generate a list of credits that are in scope for your specific set-up. From there, you review this list, remove a managed portion to focus effort, and optionally add any extra credits you want to target, creating your final list of selected credits. Your score is simply the percentage of those selected credits that you complete with sufficient, event-specific evidence, with no rounding up, and your recognition level is based on that score (from 25% for Silver, 50% for Gold, and 75% for Platinum).