this is exactly what I was writing about

UI\TownBuildNew\Towns
file academy.(TownBuildDefinition).xdb

I mean this
 
I made the following changes in the dwarven.(TownBuildDefinition).xdb file
</buildings>
        </Item>
        <Item>
            <BuildingType>TB_DWELLING_4</BuildingType>
            <buildings>
                <Item>
                    <Upgrade>BLD_UPG_1</Upgrade>
                    <XSlotPos>5</XSlotPos>
                    <YSlotPos>3</YSlotPos>
                </Item>
                <Item>
                    <Upgrade>BLD_UPG_2</Upgrade>
                    <XSlotPos>5</XSlotPos>
                    <YSlotPos>3</YSlotPos>
                </Item>
            </buildings>
        </Item>
        <Item>
            <BuildingType>TB_DWELLING_3</BuildingType>
            <buildings>
                <Item>
                    <Upgrade>BLD_UPG_1</Upgrade>
                    <XSlotPos>4</XSlotPos>
                    <YSlotPos>3</YSlotPos>
                </Item>
                <Item>
                    <Upgrade>BLD_UPG_2</Upgrade>
                    <XSlotPos>4</XSlotPos>
                    <YSlotPos>3</YSlotPos>
                </Item>
            </buildings>

As I understand it, the answer we're looking for is in the position lines.