How to manage users in WordPress - Wordpress Tutorials at KVCHOSTING
Log into WordPress.
•Click to expand User options. Select add new option. Enter the details of user, password and click on Add user button.
•You can delete or edit the button, by clicking on the appropriate tab. You will have to confirm deletion.
watch for video :
http://www.youtube.com/watch?v=Ze_C5jV5br8