Garage Band in iPadOS 2022

Hi guys.

I haven’t use Garage band for like the past 3 or 4 months ago. I read like 5 months ago a post from one of the developers of the app that it has been improved for voiceover. The thing is that I use it more with loops to create projects, but now the track screen looks very different.

Before the last updates the tracks screen was like an empty space where I could add loops and it were added as a straight line from left to right, where I could change the lenght and where it starts or end.
Now it seems like there is a greed awith like 8 colums and 15 rows where there are already set ridms which I can’t delete nor change. And when I try to drag and drop the loop I want, it combines with the preexisting loops or ridems there.

Does anybody has the most recent manual to move around in garage band or wants to explane me how it works now?
Thanks