From FreeCAD Documentation
- If the Auto-includecheckbox on the Window creation task panel is unchecked, the window won't be inserted into any host object on creation.
- Add a selected window to a wall by selecting both, then pressing the Arch Add button.
- Remove a selected window from a wall by selecting the window, then pressing the Arch Remove button.
- When using presets, it is often convenient to turn the "Near" Draft Snap on, so you can snap your window to an existing face.
- The hole created by a window in its host object is determined by two properties: Hole Depth and Hole Wire (Template:Version0.17). The Hole Wire number can be picked in the 3D view from the window's task panel available when double-clicking the window in the tree view