I want to use this camera to remotely view a lake. There is wifi access, but I want to share this camera with a group of avid recreational wind surfers. We want to be able to see observe if the wind is blowing the direction and speed we need to enjoy this activity.

Is it possible to share access to the camera with multiple individuals. It seems I can share with 5 accounts who can then share with 8 other accounts, but I don't really understand that step. Can someone let me know how to get access to what would seem like a total of 40 users?

Also is there a better wifi 4k with camera for the purpose I have described? I would like to be able to share access with more than 40 individuals.