Anyone can join your home once the join request is accepted by the Prime User.
(Prime User is the user who created the home in the SMART HOME Mobile application)

To give devices access to other people, there are two ways, they are

1. Ask the user (who wants to get access) to, go to Settings > Homes > Join Home > search with email/phone of home users > Request > Done (once prime user accepts request from notification)

2. Prime user can add any other users by doing, Settings > Homes > (Select Home) > Users > Add User > Provide email/phone of registered User > Done