You have to go to the dealer to get it changed. There’s two ways to open - press and hold the UNLOCK button on the fob or take the small key out, insert it in the driver’s door and twist and hold (one way is unlock and open windows, the other way is to locks and close the windows)
Using the key fob, yes. Open only. To close, you have to use the physical key to slot into the drivers door. Now, it’s a separate option so you have to tell them you want the “key in door operation” enabled as well.