I can’t get it to work. I opened a Support Ticket about it but had a reply saying that it does work. But it doesn’t!
The problem is, to repeat a Pattern you first have to have chained a different Pattern - because you can’t simultaneously hold a Trig key and then press it again as when you let it go the chain is broken.
So you could do 1 + 2 + 2 + 2 etc. because you can keep holding Trig 1 while tapping 2 to chain the repeats. You definitely can’t do 1 + 1 + 1 + 1 etc.
I think it’s an oversight in the UI. The whole business with holding the previous Trig key in order to chain another is a bad move and not intuitive. The chaining should keep chaining for as long as you hold the Pattern button down, no need for holding the previous Trig button. Doesn’t make sense.