Redirecting the mails to another inbox in adobe campaign classic

Hey Team,

We are actually working on the event registration web app and when ever the event form is submitted
those registration details are as a mail is going to x@gmail.com 
Now we would like to change in to y@gmail.com which means all the registartion details should point to y@gmail.com mail inbox.

Could anyone please guide us where we supposed to change everything 

Or if i should create a ticket which access i should  have 

Looking forward for the inputs