You will want to edit the Curtain Wall Boundary, one guide to do this is here: Edit Curtain Wall Boundary, there are others in the Help files, but due to the curve in plan, editing in the 3D Window may be best.
David
David Maudlin / Architect www.davidmaudlin.com Digital Architecture AC27 USA • iMac 27" 4.0GHz Quad-core i7 OSX11 | 24 gb ram • MacBook Pro M3 Pro | 36 gb ram OSX14