Talked way to fast to understand anything. Nothing was explained at all. Why "in_memory"? How do you set it to "in_memory"? How does 'Collect_Values' know what to collect? How was the field calculation arrived at? Why is it needed? How is it configured?
This is really helpful! But somehow I only get the last iteration. Seems like it replaces all other layers generated earlier. Do you know what I did wrong?
When you said "we'll connect group to copy features" at 2:08 you just clicked some things and didn't show what you did. Sadly, what could have been a great tutorial is impossible to follow.