Advanced Search : Add Preferred Communications Method to search fields

Users who are targeting contacts for outbound mass communications often need to filter the list by the preferred communication method (e.g. send emails vs. postal mail etc.). The search for this set of checkboxes uses the OR operator - consistent with other sets of checkboxes in Advanced Search.

Example: If you search by Preferred Comm Method and check Email and Phone - you'll get contacts who have one or the other (or both) preferences checked in their record.