I have 3 camera, Can i switch facing plane?
Yeah, no. You may need to describe what is needed in more details.
I don’t know what that means. It is unclear what you need. Do you want to switch between 2 cameras?
There might be a language barrier here. Perhaps describe what you need and google translate it.
Do you want the background plane to be like a billboard to always face the background camera?
or the whole world to rotate?
3 cams, on switch the new cam auto rotates to face character.
Im sorry, I want the 2D person to face the camera while switching images.
Yes, Sorry Im very beginner
I want the 2D person to be facing the camera all the time. Help me please!!!
Im switch 2 camera
This looks ok, but you every time you change camera, you need to set this variable to the correct camera:
You have to modularize 
Make the announcer a blueprint. It has a variable which is the current camera, he always faces the current camera.
Then make a camera blueprint. I can pan around etc. When it gets the signal to become the current camera, it tells the announcer about it, and does the view target blend.
Then you don’t have to worry about nightmare level blueprint spaghetti 