Obviously, the vast majority of victims want prisoners to be locked up for as long as possible. However, there are rare instances when an individual may not object to a prisoner's parole, but wishes to ask the board to impose conditions on the parole. Within reason, such requests are usually granted. Additionally, some jurisdictions allow prosecutors' offices to oppose or appeal prisoners' paroles, so you should check to see if this could be done. Please keep in mind that these are general guidelines and should not be considered to be the last word on the subject.
Many jurisdictions do things differently.