Group validation is not working in asp.net with Jquery Validation Engine Plugin

Group validation is not working in asp.net with Jquery Validation Engine Plugin

I am using jquery validation engine plugin to validate the form fields in my ASP.Net application. It works fine but there is a problem when i want to validate only set of fields on a certain button click

Ex:  When i click on save button all the form elements must be validated. if click on verify Email Address it should validate only the email field whether it is empty instead validating the entire form elements.

We have provision to handle this scenario with asp validators by setting the "Validation Group".
How do i apply the same concept with jquery validation engine plugin?