Currently, a company’s Combat Area can only be controlled by either opening its barracks menu or finding and selecting the flag on the battlefield. This is very cumbersome because it requires camera movement and, potentially, opening the barracks menu (which can have a small but very noticeable delay).
A button to move (and another to focus) a company’s Combat Area either near the company’s banner at the bottom of the HUD or as a popup that appears when hovering over said banner would permit much more convenient Combat Area controls.