Team roles
Team member: Can access all team projects in project browser and is an editor on all team projects
Team admin: All of the abilities of a team member plus the ability to set member permissions and manage billing for their team
Project roles
Project roles for individual users on a per project basis. Note that team roles override project roles (eg. a team member will always be able to edit a team project regardless of their project role).
Editors have edit access to the project they've been added to:
Editors can invite other editors and viewers
Editors can comment on projects
Editors can export projects
Editors are paid
Viewers have view and comment access to the project they've been added to:
Viewers can invite other viewers to the project (but not editors)
Viewers can add comments to the project
Viewers are free