XF 1.4 how to add 2 button login and sign up


some time i receive message sent by visitors of my forum with sign up prob almost of visitor don't understand how to signup using xenforo

i want create 2 button on my header one of sign up other of login

exemple : https://forum.proxmox.com/

how to do to get same system of signup and login

also i want delete old button of signup or login