In order to edit the filter on the All Contacts list, you will need to create a clone of the list. Once the list has been cloned, the filter icon will appear and allow you to apply different filters if you choose to do so.
The default "All Contacts" list is visible and accessible to multiple advisors within your portal.
To learn more about filtering contact lists, visit our help center article by clicking here.
Please visit our help center article on how to clone a list by clicking here.