The district prosecutor s office received an appeal

The district prosecutor’s office received an appeal from a group of workers of Vympel OJSC about the misuse of funds from the federal budget transferred to the joint-stock company’s account to pay for the state order, and therefore one of the main production lines was idle and workers were not paid wages in a timely manner.
What is the procedure for registration, accounting, consideration and resolution of complaints received by the prosecution authorities? What prosecutorial response measures should be taken in this case?