Just to inform you that when installing the plugin on my WordPress (v.4.7) I had an error exception.
// For new user form (in Backoffice)
// In multisite, user_register hook is too early so wp_mu_activate_user add user role after
if ( is_multisite() ) {
// add_filter( 'signup_user_meta', array( $checklist, 'mu_add_roles_in_signup' ), 10, 4 ); // Waiting https://core.trac.wordpress.org/ticket/39223
$bool = remove_action( 'wpmu_activate_user', 'add_new_user_to_blog', 10, 3 );
debug( $bool );
add_action( 'wpmu_activate_user', array( $checklist, 'mu_add_roles_after_activation' ), 10, 3 );
} else {
add_action( 'user_register', array( $checklist, 'process_checklist' ) );
}