How to scroll down using button when default scroll bar is disabled?

[JasmineSethi]

I want to scroll down on clicking these 2 up-down buttons. How this can be achieved?
Code looks like this:

main.qml

ListModel
{
id: dataModel
ListElement{ name: "Sun" }
ListElement{ name: "Mon" }
ListElement{ name: "Tue" }
ListElement{ name: "Wed" }
ListElement{ name: "Thurs" }
ListElement{ name: "Fri" }
ListElement{ name: "Sat" }
ListElement{ name: "Sun" }
}
//For drop down menu
Button{
id: comboBox
...
}

TableView
{
id: tableView
...
}
//For up button
Image
{
id: img1
}
//For down button
Image
{
id: img2
}

[J.Hilk]

@JasmineSethi

Connect to the clicked signals and change the currentIndex property of your ListView