How can I remove or hide this part under a SwiftUI panel? What Swift code should I write to control this?

My project has integrated SwiftUI panel , I noticed that when I open the SwiftUI interface, it always appears in front of me and stays at a certain distance. I want it to spawn on my left side instead, and with some rotation. How can I set the position in the code to achieve this?

I have a swiftUI panel poped up in my scene. And how to set the min and max size of a swiftUI for users' resizing?

Just like this pic shows, how to add secondary panel out side of the main panel by using SwiftUI?

Hi, I would like to add a topbar in the panel in VisionOS by using ToolbarTitleMenu, reffering to the document: https://developer.apple.com/documentation/swiftui/toolbartitlemenu, but in the simulator, I cannot see the topbar, what's wrong with my code?