How to see list of files accessed by app using Instruments in Xcode

I'm trying to see what files/folders a particular app accesses/modifies I have Xcode 15. I'm using its Instruments app (v. 15.2) I choose File > New > File activity. I choose select target, select my app, then hit the red record button. It starts my app and starts recording. After doing a few things in the app, I click the stop button. Now I have a bunch of data. I see a timeline. I select my app. On the bottom pane, there's a drop down list with options like "filesystem calltree" "disk io reads calltree". But selecting one only shows a whole lot of function calls. How can I see a list of files/folders the apps reads from/writes to?