Working from home is common these days, so it is beneficial to let your colleagues know when you're in the office and when you're working remotely.
This can be done through Outlook or Teams, and it will appear on your Calendar in both apps - as well as in Microsoft Places.
Figure: Outlook on the web | Work hours and location settings
Figure: Classic Outlook | Calendar with locations set
Note: Remember to update your location if it changes.
To see if your colleagues are planned in the office or remote, simply view their calendar in Outlook or Teams.
For a view of everyone you work with and their location, go to places.cloud.microsoft and select Show in office summary.
Figure: Microsoft Places | Show in office summary