As you gradually reopen your office you might want to increase the capacity of your office. To do this go to Settings -> Offices -> three dots next to your office -> Neighbourhoods.
You can then either change the capacity of an existing neighbourhood by clicking on the three dots next to that neighbourhood and changing the desk count.
Or you can create a new Neighbourhood by clicking 'Create' at the bottom.
You can learn more about Neighbourhoods here.
Need more help? Here's a step by step video: