Can league members join the league at a later Tier, or do they need to start at Tier 1?

If league members choose not to join the league in starting activity at Tier 1, they may join the league at later tiers. However, the WFTDA strongly recommends that the league set up a training program for these individuals that follows the WFTDA Recommendations for Return to Full-Contact Skating to support their safe return to full roller derby participation.