To access your Workspace settings, simply click on the ⚙️ icon. From there, navigate to the "Collaborators" tab where you can send an invitation via email. You have the option to predefine the role of your prospective collaborator, but don't worry, you can always update it later if needed.
The invited person will receive instructions via email on how to join your workspace and get started.
You can revisit these settings at any time to update the status of any collaborator.