An alternative to crafting a new call flow from a blank slate is copying an existing call flow and make adjustments.
It's super simple:
Locate the flow you'd like to copy
Mouse over it and click the 📑 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 your updates, saved, and closed the flow, you'll see it listed at the bottom of your Call Flow list.
From there, you can click the 📝 pen icon to Edit/Update the new flow name.