You can change your nominee when you requalify for Platinum, but only after your current Gold Partner has completed their own tier cycle. Just make sure the auto-renew check box is un-ticked in the Gold Partner section of your Benefits page. We recommend you nominate someone who is unlikely to experience the benefits of Gold based on their own travel. If your Gold Partner achieves Platinum status in his/her own right, you can nominate a new Gold Partner.