Every workspace has two kinds of people: Owners and Members.
Owner
Full control — billing, adding or removing members, and all settings.
Can invite people and manage the whole workspace.
Member
Can use the AI employees and collaborate day to day.
Can't change billing or remove other members.
Adding people
Invite teammates from the Team section — each person gets their own login. For how seats and billing work, see Marblism pricing plans & billing cadence.