public function settings( $tabs = array() ) {
		static $license_help_text = false;

		if ( ! $license_help_text && ! isset( $tabs['licenses']['main']['license_help_text'] ) ) {
			$license_help_text = true;

			$tabs['licenses']['main']['license_help_text'] = array(
				'type'     => 'html',
				'content'  => '<p><strong>' . sprintf( __( 'Enter your extension license keys here to receive updates for purchased extensions. If your license key has expired, please %srenew your license%s.', 'popup-maker' ), '<a href="https://docs.wppopupmaker.com/article/177-license-renewal?utm_medium=license-help-text&utm_campaign=Licensing&utm_source=plugin-settings-page-licenses-tab" target="_blank">', '</a>' ) . '</strong></p>',
				'priority' => 0,
			);
		}

		$tabs['licenses']['main'][ $this->item_shortname . '_license_key' ] = array(
			'type'    => 'license_key',
			'label'   => sprintf( __( '%1$s', 'popup-maker' ), $this->item_name ),
			'options' => array(
				'is_valid_license_option' => $this->item_shortname . '_license_active',
				'activation_callback'     => array( $this, 'activate_license' ),
			),
		);

		return $tabs;
	}