I need help about Control Rig / IK

Hello, I am trying to understand Control rig with Unreal engine. so I am doing a simple project. The character holds the handle of the door with IK, there is no problem with this, but some problems arise. If the distance of the hand is far, the arm passes through the body and causes a bad result. What I want to do is to rotate the body with the arm. But I couldn’t do it because I’m new to this IK. I would be very happy if you can tell me the method of doing this.

You can use FullBody IK that will create an IK chain that will also include the spine, so that the upper body will try its best to reach the target.
Alternatively you can rotate the torso based on the distance to the target, so that the hand will be able to reach it without any weird result.

Can you send me a screenshot of how I can do it?

It’ll be faster for you to check the documentation or some youtube tutorials, there are plenty regarding IK.

I am already watching all the videos on the subject. I opened a topic in the forum because I could not solve it.