modify-user-field-attributes.php

<?php
/**
 * Modify user field attributes example code.
 * For Example: Change profile attribute based on location and user role.
 *
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
function my_pmpro_modify_user_field_attributes_example( $field, $where ) {
	$user = wp_get_current_user();

	if ( is_admin() && 'admin_only' === $field->profile && ( current_user_can( 'edit_users' ) || in_array( 'editor', (array) $user->roles ) || in_array( 'author', (array) $user->roles ) ) ) {
		$field->profile = 'only';
	}
	return $field;
}
add_action( 'pmpro_add_user_field', 'my_pmpro_modify_user_field_attributes_example', 10, 2 );