The Key Symbol was the one I clicked after I had the site address in the window and it would instantly fill all the required fields . For some reason that key disappeared when using Safari. It is still available when using Chrome.
1Password Version: Version 3.8.22 (build 32010)
Extension Version: 1Password(beta)3.9.21.b1
OS Version: OS X 10.10.3
Sync Type: iTunes