As you pointing out for the two separate email configuration which I aware of.
But mainly am asking about using alias email ID instead of individual account.
I have only one Individual Email ID which have authentication and remaining are all group email ID/alias Email ID in Gsuite.
I would like to configure all alias/group ID but for authentication will use individual account and modify From Email ID address which response email received by the customer through osticket.
Where already using the same method in my current ticket center which i planned to migrate into osticket.