1. After Upload 360 VR Scene in Authoring tab click on "Global Settings" button
2. Scroll down to "Other" settings --> enable "Add Home Button to Bottom" option --> Upload "Home Button Icon" image with your company logo
3. Publish Android, iOS, GearVR, Daydream, HTC Vive, Oculus Rift package and check at camera tripod/nadir position and it will get hide with image with your company logo.