FBX loader : Multiple Component in single fbx loader

Questions
1

How can we manage different texture to each component in fbx file .
Suppose we have a FBX file and in fbx file there are several component and we want different texture to each file.

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2

You should traverse that object and change the material map of preferred meshes via TextureLoader.

You can log your object and check your meshes along other things.

Something like this:
I don’t really have your example code so.

const loader = new FBXLoader();
			loader.load( 'models/fbx/Samba Dancing.fbx', function ( object ) {

				mixer = new THREE.AnimationMixer( object );

				const action = mixer.clipAction( object.animations[ 0 ] );
				action.play();

				object.traverse( function ( child ) {

					if ( child.isMesh ) {

						child.castShadow = true;
						child.receiveShadow = true;
						child.material.map = new THREE.TextureLoader().load('./models/gltf/BotSkinned/glTF-MaterialsUnlit/AvatarBotA_Tex_Combined.png');
						child.receiveShadow = true;
						console.log(child)
					}

				} );

				scene.add( object );

			} );

I suggest you to move on to gltf models by the way.