Trouble with anchors

Circuits

Let's say I have a given space: 360x860 or what-have-you and I want to use anchors to align a Rectangle s/t it's on the center of the horizontal access like so:

anchors.horizontalCenter: parent.horizontalCenter

great now my rectangle will be centered s/t the center of it's horizontal axis is @ 180. Now lets say I split the vertical axis up into 4 quadrants starting from the top of the page moving down I will have: q1, q2, q3 and q4 all of which will be 215 px in height. Can I center my original Rectangle on the vertical axis q4 line using anchors somehow? Obviously I could just calculate it:

q1 (0-215), q2(215-430), q3(430-645), q4(645-860)

therefore I could say:

Rectangle
{
  anchors.horizontalCenter: parent.horizontalCenter
  y: 645
}

The problem here is I am not using anchors and I was told to always use them if I could. Something like this:

anchors.verticalCenter: parent.verticleCenter/2

Obviously, this wont work because this could refer to two different locations q2 line or q4 but hopefully it gets my point across about what I am trying to do here.

ODБOï

@Circuits hi
can margins and offsets help ? https://doc.qt.io/qt-5/qtquick-positioning-anchors.html#anchor-margins-and-offsets