Looks I cannot add “external only” user. I am in business plan but the “all user” group has to be granted . How does it price? Does it count as internal user?
Hey @Tony_King - thanks for reaching out. And welcome to the community!
The All Users group is assigned to everybody by default. The defining characteristic of an external user - and ultimately what defines their billing state - is their email domain. You can define your internal domain in the External Apps section of your org settings:
I hope that clears things up! Let me know if you have any other questions.

