https://acrobat.adobe.com/link/track?uri=urn:aaid:scds:US:17acc957-0079-424e-9fad-258539acd5b3This form has a drop-down. I have split the display value and the email into two strings and output them in two text boxes. in your form, you can hide the two text boxes
maybe try something like this for your drop downJohn@abc.com,Finance=FinanceCathy@123.com,Internal Audit=Internal AuditThen using javascript string manipulations you can extract the email and Department from the value