Are obliged to go interview candidate, finally (3)
I believe the answer is:
'are obliged' is the definition.
(people who are obliged owe something to others)
'go interview candidate finally' is the wordplay.
'finally' indicates one should take the final letters.
The last letters of 'go interview candidate' are 'OWE'.
'to' is the link.
(Other definitions for owe that I've seen before include "Be in the red", "Have outstanding", "Are debtors", "Have a debt to (someone)", "Have obligation to pay".)