Switching from Apache to LiteSpeed can be a quick and painless process. If you're a KnownHost managed hosting customer, and aren't confident in handling this yourself, then please contact technical support by opening a ticket and requesting a hand.
Done!
Switching back to Apache is done in exactly the same manner, only choosing Switch to Apache, then confirming the selection.
Note: If you don't see the LiteSpeed Web Server plugin in the list of WHM plugins or have any questions related to the installation / migration to LiteSpeed, please contact technical support for assistance.