There is no wand in the Explorer Edition – it is just the single button Bluetooth clicker. The BRIDGET mixed reality app works with the clicker. You use the reticle in the middle of your vision to point. You can look at the robot and click to bring up a menu.
Yes, this is not documented anywhere. We’re going to have to get a lot better at first run experiences.
It’s also unfortunate that all of these controllers are so proprietary at the moment. Interoperability with the Daydream VR wands would make the most sense. There is already an article on reverse engineering the controller.