How to show an installed (gear vr) app on the oculus library? (set up unknown sources)

Hi. I've already built the apk from the unity project. I can install the apk and run it on the device, but only from the launcher. I'd like to know if there is a tool such as "allow from unknown sources" just like oculus go for pc. I'm using the gear vr and can't find any option like that.
Thanks in advance.