create link to another qml file

[joko]

Works fine for me:

// main.qml
import QtQuick 2.2
 
Rectangle {
  width: 800
  height: 600
  color: "yellow"
 
  Rectangle {
    id: header
    anchors.top: parent.top
    anchors.left: parent.left
    anchors.right: parent.right
    height: 200
    color: "red"
  }
  Loader {
    id: loader
 
    anchors.bottom: parent.bottom
    anchors.top: header.bottom
    anchors.left: parent.left
    anchors.right: parent.right
 //   source: "other.qml"
  }
 
  MouseArea {
     anchors.fill: parent
     onclicked: loader.source = "other.qml"
  }
}

// main.qml
import QtQuick 2.2

Rectangle {
  width: 800
  height: 600
  color: "yellow"

  Rectangle {
    id: header
    anchors.top: parent.top
    anchors.left: parent.left
    anchors.right: parent.right
    height: 200
    color: "red"
  }
  Loader {
    id: loader
    
    anchors.bottom: parent.bottom
    anchors.top: header.bottom
    anchors.left: parent.left
    anchors.right: parent.right
 //   source: "other.qml"
  }

  MouseArea {
     anchors.fill: parent
     onclicked: loader.source = "other.qml"
  }
}

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Thank you, your example is working. However i modified your main.qml file based on what i am trying to achieve.
Once clicked, other.qml file will be loaded. Then I wanted to display again the main.qml after clicking in other.qml file.
Am I understanding it correctly how Loader works?
Thanks.