let storyboard = UIStoryboard(name: "Main", bundle: nil)
        let viewController = storyboard.instantiateViewController(withIdentifier: "customer_dashboard_date") as! UITableViewController

        viewController.modalPresentationStyle = UIModalPresentationStyle.popover
        viewController.preferredContentSize = CGSize(width: 500, height: 350)
        let button  = UIButton (frame : CGRect (x:100, y:100 ,width:100 , height:40))
        button.backgroundColor = UIColor.red
        button.setTitle("My Button", for:.normal)
        button.setTitleColor(UIColor.yellow, for: .normal)
        //viewController.view.addSubview(button)
        present(viewController, animated: true, completion: nil)

        let popoverPresentationController = viewController.popoverPresentationController
        popoverPresentationController?.permittedArrowDirections = UIPopoverArrowDirection.up

        popoverPresentationController?.popoverLayoutMargins = UIEdgeInsets.init(top: 0, left: 100, bottom: 0, right: 0)
        popoverPresentationController?.sourceView = sender
        popoverPresentationController?.sourceRect = CGRect(x: 70, y: 0, width: sender.frame.size.width, height: sender.frame.size.height)