registerClass(myFooterViewClass, forSupplementaryViewOfKind: UICollectionElementKindSectionFooter, withReuseIdentifier: "Footer")

override func collectionView(collectionView: UICollectionView,   viewForSupplementaryElementOfKind kind: String, atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView {

  switch kind {

    case UICollectionElementKindSectionHeader:

        let header = collectionView.dequeueReusableSupplementaryViewOfKind(kind, withReuseIdentifier: "Header", forIndexPath: indexPath) as! UICollectionReusableView

        header = SomeView
        return header

    case UICollectionElementKindSectionFooter:
        let footer = collectionView.dequeueReusableSupplementaryViewOfKind(kind, withReuseIdentifier: "Footer", forIndexPath: indexPath) as! UICollectionReusableView

        footer= SomeView
        return footer

    default:

       print("anything")
    }
}

func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
    let sectionView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "FutterView", for: indexPath) as! CollectionReusableView

    return sectionView
}

@IBAction func ButtonClick(_ sender: Any) {
    print("Click 1st")
}
@IBAction func ButtonClick2(_ sender: Any) {
    print("Click 2nd")
}