Changing RTN for after-hours in incontact center

Does anyone know how I would change a ring to number that is part of my Call Center (incontact). My setup is straight forward. During business hours it rings the agents. When hours of operation reach (after-hours) it forwards to an off premise number. I need to be able to change the RTN when needed. I cant find where this resides anywhere. I dont see this being a hard task to do.