Replace Original Interface with a new one

[stbb24]

I have an option menu and under it is original and replace with the code definition below for each option

// code for original interface
void MainWindow::on_actionOriginal_triggered()
{
    ui->centralWidget->show();
}
 
// code for replace original interface
void MainWindow::on_actionReplace_triggered()
{
    ui->centralWidget->hide();
}

// code for original interface
void MainWindow::on_actionOriginal_triggered()
{
    ui->centralWidget->show();
}

// code for replace original interface
void MainWindow::on_actionReplace_triggered()
{
    ui->centralWidget->hide();
}

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The original interface has three buttons and two line edits when the program is run. Now when the user clicks the replace option I want to replace the original interface with 2 buttons and a line edit. And when the user clicks the original option it's able to display the original interface again

So how can I replace the contents of the original interface that was shown before with a new one?

[ChrisW67]

You already have a perfectly workable answer to this question in the first thread you opened on the topic.