Quick start: add any mesh object (it is ignored), add a Geometry Nodes modifier, pick Tidebone Windows & Doors, choose Element and Style, set Width, Height and Sill Height, then add Sashes, Bars, Head, Surround, Shutters or Steps. Raise Columns and Rows for a facade.

The element looks to −Y; the origin is the floor-level centre of the grid.

Own wall: switch Wall off and use the Opening Cutter output in a Boolean (README section “Cut the openings into your own wall”).

Worn Walls: use Parts = Walls Only.

The full README with input and polycount tables is included in the download.