post https://api.clickup.com/api/v2/team//guest
Invite a guest to join a Workspace. To invite a member to your Workspace, use the Invite User to Workspace endpoint.
You'll also need to grant the guest access to specific items using the following endpoints: Add Guest to Folder, Add Guest to List, or Add Guest to Task.
*Note: This endpoint is only available to Workspaces on our Enterprise Plan.*