GoHighLevel Missed-Call Automation Tutorial

I want a fully functioning Missed-Call Text-Back workflow created inside my GoHighLevel sub-account and, just as important, I need the entire build captured in a clear Camtasia screen-recording so my team can replicate it any time... (Budget: $10 - $30 USD, Jobs: Android, Camtasia, GoHighLevel, JavaScript, PHP, Software Architecture, Video Editing, Workflow Automation)