A workspace contains a number of teams.

A team is of ephemeral nature and may be created and removed as the users see fit. E.g. A team may be set up for the lifespan of a project or during a customer process. All access control is based on the team as a group concept. A teammate shares a document with all trusted members of a team.

To show the teams on mobiles you tap on the menu button in the top left corner: 

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