How to change the Last Modified Date using Enquiry Batch Update in Confirm

Product Feature: Customer Services

In Enquiry Batch Update filter there is an Effective date field which you have to populate if you want to change it.

If you do not set any date it means you don't want to change Effective date so it remains same. So the utility give some control to user to set the Effective date.
UPDATED:  October 10, 2017