Looking for guidance on best way to test the Secure 2.0 Roth Catch-up Enhancement

Hello all! I'm wondering if any customers would be willing to share their test steps for the Roth Catch-up enhancement? We just got all of the PRPs loaded into our test environment and did a refresh of it so that it matches what is currently in production. I am unsure of where to start testing though since we are at the beginning of the year. The main thing I am wondering is if we need to enter a balance adjustment (or something to that extent) for an employee that gets them close to the limit, one that puts an employee