When you are working in an office environment your colleagues can see what you are doing and are normally aware of conversations, telephone calls and other occurrences that you just take for granted they know about. When you are working from home nobody can hear your telephone calls, see when you have updated a project, or even popped to the kitchen to make a sandwich. Communication is the key to survival of a remote workforce. A company WhatsApp group is a starting point but a communications app such as #Slack or Microsoft Teams keep your communication at its best possible level.