Is there a quick way to perfectly match T pose skeleton to UE5's standard A pose when Retargeting?

Thanks for your kindly reply!
And this metod the video showing is what I am using now , as I mentiond before adjust target skeleton to match with base skeleton may be very time-consuming.(If you pay attention at the arm part and hand part you will notice they are not matched so well because UE5’s standard model’s arm has a littel rotation between upper arm and lower arm which mixamo’s model dont have,even more, the arc of the finger part have more difference, which is more obvious when retargeting hand movements - such as holding a gun.
So in order to solve this problem, I think it is necessary to rely on a plugin that can perfectly match the target skeleton to the base skeleton. Hand adjusting are just time-consuming and result would be often unsatisfactory

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