Possible to select multiple fields for fetching email in AJO campaign?

Hi Team,

I have a usecase where I need to select a specific field from the profile schema for reading out the email for campaign. However if this field is empty then I want AJO to select some other field for reading the email. Currently we can only select one field using the execution field option in AJO. Is there some other way to handle it?

I am aware that in journey its possible to override it , not sure how it can be handled in AJO campaigns.

Thanks,

Arpan