You don’t need to have a workspace to discuss with an other member of Twake. To add a contact, click on the top-left corner of the application to access the Parameters page. Click on “contacts” to manage your contacts.
You will see current contacts requests from you and from other users to you. You can accept requests or refuse requests. To search an other user, type its username on the input fiels on the top of the page, if the user is found, you will be able to send a contact request.
When you have contacts, you can discuss directly with them in your private workspace in your app Messages. If a contact is also a collaborator of one of yours workspaces, your private discussion will be the same across (private and shared) workspaces.