Create custom fields for first and last names

Managing Custom Fields

Personalize emails with subscriber custom fields

How to create Custom Fields – Concep

Add Custom Fields to WooCommerce Registration Form – Paul Chinmoy

Lead Custom Fields : Support Portal & Knowledge Base

forms - Merging firstname/last name into one field - User Experience Stack Exchange

User Field Type - WP User Manager

How to separate the Name field into First Name and Last Name? : UpViral

Site Members: Showing Custom Info Fields in Member Profiles, Help Center

Suggest existing custom field names when adding new custom fields - Password Manager - Bitwarden Community Forums

Merging First/Last name into One Field - UX Pickle

Custom fields for subscribers

Adding Custom Fields to Templates

Create custom user fields

Creating Custom Fields – Hype