1-How can you share some of your wifi light switches with others? (similar to Ring)

2- Additionally if I added a friends wifi light switches to my account on my app being that he wasnt available to make an account yet, can I transfer these lights to his account when he has it set up? Or will I need to default the switches and readd them from scratch to his account?

3-Is there any way to access the switches thru a web browser? That would be a great plus for others to access with credentials..

Any help would be very appreciated.