The CRM application does not allow marketing list views to be customized. However, the views are stored in the savedquerybase table and may in fact be customized.
Firstly, we need to find the GUIDs for the relevant views. There are nine views in total, All, Active and Inactive members for Accounts, Contacts and Leads. Query the table (using SQL Server Management Studio) for these views using:
select * from savedquerybase where name like '%mem%'