We need you to edit your item Layout, so it has a wrapper/holder for the Ads.
Keep in mind this wrapper/holder could be expanded or contracted, so make sure your layout adapts to this changes, this size changes in the layout will be limited by the ad configurations that your technical account manager can edit.

This is because we can not edit your data for adding new items to the adapter, so we take the existing item views and add the ads to them. You can customize which items have ads when you create the configuration for the infinite scroll.

class TableViewInfiniteScrollViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
    
    var tableView:UITableView!
    ...
    override func viewDidLoad() {
        super.viewDidLoad()
        tableView = UITableView(frame: self.view.bounds, style: .plain)

        // Register a cell class
        tableView.register(InfScrlViewCell.self, forCellReuseIdentifier: "cell")
        
        tableView.delegate = self
        tableView.dataSource = self
        
        tableView.estimatedRowHeight = 300
        tableView.rowHeight = UITableView.automaticDimension

        self.view.addSubview(tableView)
        
        NSLayoutConstraint.activate([
            tableView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
            tableView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
            tableView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
        ])
        ...
    }
 ...   
}

class InfScrlViewCell: UITableViewCell {

    let centeredLabel = UILabel()
    // This is the wrapper
    let adContainer:UIView = {
        let view = UIView()
        view.translatesAutoresizingMaskIntoConstraints = false
        view.accessibilityLabel = "infiniteScroll_ad_wrapper_tag"
        return view
    }()
    
    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        contentView.addSubview(centeredLabel)
        // Added the wrapper to the item
        contentView.addSubview(adContainer)
        // Setup the constraints
        ...
    }
    ...
}