Username settings
- **Enter username**: Set a login username for the new administrator
- **Uniqueness requirement**: The username must be unique in the system
- **Format requirement**: Support letters, numbers, and underscores
- **Recommendations**: Use meaningful usernames, such as `admin_zhang`, `manager_li`
Password settings
- **Set password**: Set a login password for the new administrator
- **Security recommendations**:
- Use a password of more than 8 characters
- Contain letters, numbers, and symbols
- Avoid using simple passwords such as `123456`
- **Example**: `Admin@2024`, `Manager#123`
Permission level settings
- **Select level**: Select a permission level from 1-9
- **Level description**:
- Level 1-3: Basic operation permissions
- Level 4-6: Medium management permissions
- Level 7-9: Advanced management permissions
- **Restrictions**: Cannot create administrators with higher permissions than yourself