Adding columns to the Manage Signups table
But sometimes to make it easier to decide if to approve or reject you might need to see more data about the user, including custom fields that they have filled out at user registration.
To add custom columns you will need to add this script to a wpum.php file in your /wp-content/mu-plugins/ directory (you might need to create the mu-plugins directory).
You can edit the columns and field keys as needed, or add more:
To find the field key, see https://docs.wpusermanager.com/article/185-what-is-the-field-meta-key-option