How do I get 1P to enter my "Last name"

Hello ajahn, thanks for reaching out.

You can add a custom field to your American Airlines Login item titled "Last name". Here's how:

1. Open and unlock 1Password.
2. Locate your American Airlines Login item and click "Edit".
3. Click "+ add more" and select "Text".
4. Change the "text" title to "Last name" and enter your last name below it. Click "Save".

Here's a screenshot for reference:

Let me know how that goes or if you have any questions along the way.

-Evon