Domain user add with a link to a domain tenant
So i have one user who has for over a year has used his domain email (@somedomain.com), who was not currently added to our domain tenant (somedomain.com). He is insistent that all he needs is a link to join our somedomain.com tenant. Does not want me to create a user in the admin console. Our tenant is set up through our Power Bi account - we do not currently have office O365 yet. Is this possible? Everything i have read suggests otherwise. I know i can be wrong with this. I think he will only be added as a guest with limited functionality. (No chat, or recording teams meeting) Both things are done regularly. Someone here had used their personal Microsoft account an created a teams channel - with everyone in the domain using their domain address - i have people who want to bring that channel over to the domain (somedomain.com) Teams (We have exploratory - free account) - If i create a user account with their current password they are using now will that allow the channel to "come over" to the somedomain.com Teams. Thanks in advance - any help would be greatly appreciated.