First you need to open the task part and dashboard, then by clicking on the plus button you can create your personal workspace, choose a name for it, create and use it. You can save their all your tasks, emails, have a checklist, put all your contacts, and documents. For example for tasks in common you can put all them in one workspace so its easier for you to work.
For the teams, its all most the same steps, just open the plugin, go to workspaces, and you choose the workspace, and then inside we have teams and workspaces, and you create many of them.