I have a website that requires Username, Pin code and password. How can i store those in 1Password?

Thanks for looking into this.

I understand the workaround and can operate this myself, it's just getting my older relative to use it is a challenge. I probably set this up manually I think, as I always have to get the URL exact because my relative uses these as bookmarks. So we have both a password and pin field saved. We just have to drag the PIN thankfully. He struggles with anything that requires 2 windows or even 2 tabs in Chrome. I will probably work with him all the time with this website.