How to pay IV fee?

Excuse me, could you please elaborate on the process for paying the IV fee? I'm a bit confused about the steps I need to take. Is there a specific platform or method that's typically used for this type of payment? Also, are there any additional fees or charges that I should be aware of when making the payment? I would appreciate it if you could provide me with a clear and concise explanation of the entire process. Thank you in advance for your assistance.