To configure Apache settings in WHM (Web Host Manager), follow these steps:

1. Login to WHM: Access WHM using your credentials.

2. Navigate to Apache Configuration: Once logged in, you can find Apache configuration options under the "Service Configuration" section. Click on "Apache Configuration".

3. Global Configuration: In this section, you can modify global Apache settings that apply to all websites hosted on your server. Common settings include Timeout, KeepAlive, MaxClients, etc.

4. Include Editor: WHM typically provides an Include Editor interface where you can add custom configurations for Apache. This is useful for adding specific directives or making changes not covered by the standard settings.

5. Virtual Hosts: You can also manage individual virtual hosts (websites) by clicking on "Virtual Hosts" within the Apache Configuration section. Here, you can modify settings specific to each website, such as document root, server aliases, SSL/TLS configurations, etc.

6. Advanced Settings: Depending on your WHM version and configuration, you may have access to advanced settings such as Apache modules, MPM (Multi-Processing Modules) settings, and other performance-related configurations.

7. Save Changes: After making any modifications, don't forget to save your changes. WHM usually provides an option to rebuild Apache configuration files to apply the changes.

8. Testing: Once you've configured Apache settings, it's essential to test your websites to ensure everything is working correctly. Check for any errors or unexpected behavior that may have been introduced by the changes.

9. Monitor Performance: Keep an eye on your server's performance after making changes to Apache settings. Monitoring tools within WHM or third-party software can help you assess the impact of your configuration adjustments.

10. Documentation: WHM often provides documentation or tooltips alongside configuration options to help you understand their purpose and potential effects. Refer to these resources if you're unsure about any settings.

Remember to proceed with caution when modifying Apache settings, especially if you're not familiar with their implications. Making incorrect changes can potentially disrupt website functionality or compromise server security.