The Guest User Role is only available on our paid Scaling and Professional plans.
All user types including guests will be included in your account's overall user count for billing.
Learn more about our plans here.
Tettra has a Guest user feature that allows you to add people outside your team and restrict their access to certain items. Here are some situations where this can be handy:
Guests can do the same things that regular users can do (including sharing and printing pages), provided they're in a category to which you've invited them. They can also see all information within public categories but will not be able to edit those pages unless they are explicitly given access. You may add or remove a guest's access to categories at any time.