Editing custom distribution lists Note: You can only make edits to the Custom Lists page. You cannot make edits to the Members or Lists pages. Click the Messages icon. Click Address Book. Click Custom Lists. Click Edit next to the name of the distribution list you want to edit. Perform one of these actions: To add members to the list, select the members, lists, or teams you want to add using the lookups, and click Submit. To remove members from the list, select the name of the member, list, or team you want to remove, and click Remove. Click Save.