1C UX 3.1 how to appoint a person responsible for approval?

Question

1C

When I try to send the document Application for payment for approval, I get an error that no responsible person has been assigned.
Where and what needs to be configured to assign a responsible person?
At the same time, such an error does not appear in the Register of Payments document, although no additional did not make any settings.

Answer 1

I recommend to take training in UX, it requires a specialist to run it. Simply reading the manual won't do.