IIRC, those are little "covers" and you can just stick a pick in and remove them.
I never needed to open the accessory spare tire kit as I have been fortunate to not need to use the tire. But my lug nut locks have always been in a separate case in the glove box. I can place the lug kit box into the accessory case?...and when you find the pick tool in the accessory box you will definitely need the coded lug nut adapter for one security bolt fitted to each wheel, which is in the same tool tray.