I'm following a time lapse clip which has to do modelling the PLayStation 5. I cant seem to understand what the modeller is doing at 0:20 seconds,(I lowered the speed at 0.25) Somehow he is avoid a tri face. But If I continue modelling, as seen from the different angles I've provided I'll get a tri face in the corner of my model. Can someone please tell me what he's doing with the mesh to get a quad when he extrudes the mesh.
Thank you.
https://www.youtube.com/watch?v=WzGkQAfxakE&list=LLZ2XZXqOZRx6idQLEh4-RIw&index=2&t=13s