An alternative to crafting a new call flow from a blank slate is copying an existing call flow and making adjustments.
It's super simple to duplicate a call flow:
Locate the Call Flow you'd like to copy
Select the π copy icon
Confirm that you want to copy this flow, and you'll be automatically placed into the flow editor to make any needed refinements
Once you have completed and saved your flow, you'll see it at the bottom of your Call Flow list
Click the π pen icon to Edit/Update the new flow name.