You have two choices.
Either add an empty opening of the required shape and size to the wall above - but it will not be linked to the window so if you change the window in any way you will also have to change the opening separately.
Or what I would do is split the wall either side of your opening.
Split the wall on the storey above at the same places and delete the wall in the middle (above the window).
Then increase the height of the bottom wall to match what was the wall above.
Set the wall to show on "All Relevant Stories" in the wall settings.
That should be it.
Barry.
One of the forum moderators.
Versions 6.5 to 27
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