Could you please elaborate on the steps involved in adding the FET network to MetaMask? I'm particularly interested in understanding the prerequisites for this process, such as any specific software or account requirements. Additionally, it would be helpful if you could provide any tips or tricks for a smoother integration. Could there be any potential challenges or issues I should be aware of while attempting to add the FET network? Finally, is there a recommended order or sequence to follow when adding multiple networks to MetaMask? Thank you for your assistance in this matter.