Thank you for your advise.
1. Regarding of the creating new widget areas :
I have copied function.php from parent theme to child theme by using FireZilla. After copying, I tried to open it, but cannot as it shows:
Warning: require_once(wp-updates-theme.php) [function.require-once]: failed to open stream: No such file or directory in /home/uendic5/public_html/wp-content/themes/startuppro-
child/functions.php on line 521
Fatal error: require_once() [function.require]: Failed opening required ‘wp-updates-theme.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/uendic5/public_html/wp-
content/themes/startuppro-child/functions.php on line 521
So what must I do now ?