To achieve this use case, you need to make this change to the trigger step of your existing workflow. This will allow you to trigger your workflow every 4 hours.Another question...
If I want this same automation to run every 4 hours from 6 am
And don't ride in the early hours of the morning from 00:00 to 5:59
How do I do it?
If you want your workflow to be enabled and disabled at a particular time automatically, you can follow the steps shared in this thread: https://forum.pabbly.com/threads/time.15949/#post-75509.