How can I set up HP printer via 123.hp.com/setup?

I need a multiple printer for printing, scanning and copying services. I have decided to choose HP printer. I am new user of HP products, so I don’t have much experience about its features and functions. I want to establish multiple HP printer with the assistance of 123.hp.com/setup. I am using my skills to open it in the web browser and enter my model number. After this instruction, I am completing the next technical process. In the middle of the process, I am experiencing problems. So I am sharing this problem with all of you, guys. Could anyone suggest me the right steps to set up HP printer using 123.hp.com/setup? @https://l-123hp.com/