In GraphQL Editor you can collaborate on projects. To do this you need to have every member in the same namespace. You can setup 5 different levels of permissions for your invited member.
Team owner can add/remove/edit/view team projects and members. Only the owner can delete the team
Team admin can add/remove/edit/view team projects and members (except the owner)
Team editor can add/edit team projects
Team viewer can view team projects
Team contributor can edit team projects