An Organization Member can have one of two roles (access rights):
Owner
Member
Organization Owner
Can manage Organization Members
Can create new Projects
upon creating a new Project, they will automatically become the Project Admin, which can be changed later if needed
Can delete and restore Projects
Can edit Organization settings
Has access to Organization billing
An Organization can have more than one Owner.
An Organization always needs to have at least one Owner. When trying to remove the last Owner or change their roles to 'Member', you will need to make someone else an owner first.
Organization Member
An Organization Member is a general Member of this Organization, usually as a result of being part of one or more Projects within the Organization.
An Organization Member:
Can access all Projects they are part of with an active User role - the available Projects can be seen from the Project switcher in the top right, from which they can select and go to a Project
An Organization Member:
Cannot manage Organization Members
Cannot create new Projects
Cannot edit Organization settings
Does not have access to Organization billing