Hello Martha
Odoo allows adding fields already defined in the list view by default. For additional fields (like your custom Department, Industry, etc.), use Odoo Studio. Studio lets you add these extra fields to the list view's header/columns. (A video demonstrating this would be helpful.)
Thanks & Regards,
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Hi
Martha Gomez,
You can add headers with existing/created field/column into Contact list view via Odoo studio. Follow the below steps.
1. Go to Contacts --> Switch to List View --> Click on Studio Icon 
2. Scroll on left panel for Existing Field, and after that inside search box, you can search your field and drag-drop into list view based on position you want in list view for that column/header.
Select Option as a "Show By Default" to visible every time in the list view header.
Thanks & Regards,
Sunny Sheth (shethsunny555@gmail.com)
