Can not see anything in Signing & Capabilities

I am building the VisionPro project in Unity.And tried to add GroupActivity to it. But I found that the VisionOS simulator project generated by Unity didn't have any items under Signing&Capabilities. The Signing configuration item is not displayed also. Even when I try "+Capability", it says "Capabilities are not supported for Project-Name".

Thanks for any help.

Can not see anything in Signing & Capabilities
 
 
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