Turn the layout into a buildable drawing. Place the Wire Table and BOM Table on the canvas, then add an A4 landscape frame and size it around the harness.
On the left command bar, open Tables.
Click Wire Table and place it on the canvas.
Click BOM Table and place it on the canvas.
On the left command bar, open Frames.
Click A4 landscape to drop a drawing frame onto the canvas.
Select the frame border and drag it to fit the harness and both tables within it.
A Wire Table and BOM Table on the canvas, sitting inside an A4 landscape frame sized around the harness.