How would Eloqua Engage handle Email Group Unsubscribe?

Hi Everyone,

We had created emails in Eloqua and made them available in Engage so that Sales can utilize them whenever required. These emails are saved under an exclusive email group created to hold only Sales emails and the default footer contains unsubscribe link that will provide an option to opt out only from this particular Email group (and this as per the requirement given)

However, it is noticed that Engage still emails to those customers who are opted out from the mentioned Email group, but globally subscribed. How can we handle Email Group level Unsubscribe in Engage?

Thanks!