Hi and welcome. Every production needs some 'cut aways' or nodding heads. These can either be filmed with 2 cameras or on one. With one camera, after the shoot, just ask the talent to nod their heads as though listening. These can be cut in at any point to keep the main audio flowing but adding another viewpoint. The same for hands. Film the hands afterwards too, either holding a glass/cup/paper and use these shots too.
Camera further back shot obviously needs two cams, one on close up the other wide.