To view a custom table of Contacts, either
you need to create a Custom View first
or one of your colleagues needs to create a Custom View with the owner set as the Organisation
Steps
Select My Apps in the top menu
Select Contacts
You arrive on the Overview tab
Select
Open the Select a table dropdown list which is on the right side at the top of the table
Choose the View you want to use
A dropdown list of Custom Tables appears
The page updates to display the columns for the Custom Table you have chosen
To download the Custom Table as a CSV file:
Select More Options
A dropdown menu appears
Select Download as CSV