How to activate GT transfer code?

Hello, I'm curious about the process for activating a GT transfer code. Could you provide me with a step-by-step guide on how to proceed? I've heard that it's a crucial step for securely transferring cryptocurrencies, but I'm not entirely sure where to start. Could you also clarify if there are any specific requirements or prerequisites that need to be met before activating the code? Additionally, is there a time limit for activating the code after it's been issued? Any advice or tips on ensuring a smooth and secure transfer would be greatly appreciated.