You can give anyone you trust access to your site building tools and other features of your service with the Access Manager or Password Manager.
To give your designer access to the tools in your Web Hosting service, you can use the Access Manager make the designer an administrator of your Web Hosting account. Your designer will never have access to your billing, email, or other sensitive information but will be able to work with most other features of your services, such as Yahoo! Site Solution or your MySQL databases.
You or your designer may prefer to instead upload your pages, graphics, or other assets to your account via FTP. To provide your designer FTP access to your site, you'll need to visit your Password Manager, located on the Manage tab of your Web Hosting Control Panel. Learn how to set up and use FTP.