Visiting and having visitors
To visit someone, you need their apartment number, which is on their contact card. At the building, choose Ring the intercom and type the number.
The number combines the floor and the apartment: on the ground floor it goes from 001 to 010, on the first floor from 101 to 110, and so on.
The person gets the call wherever they are and decides whether to open. If nobody answers in 30 seconds, the intercom gives up. An apartment fits up to 10 visitors.