As the Owner or Admin of a Team Workspace, you can invite an unlimited number of Viewers for free. As Viewers, members will have access to view and comment on projects in the workspace, however, they won't have editing, publishing, or content creation privileges.
In order to invite Creators into your Team Workspace, the Owner or Admin of that workspace must purchase an additional Storyteller or Pro subscription for each Creator. Creators in a workspace have access to record audio and video content, edit audio and video projects, create content with AI voices, and publish shows and episodes.