There is no set time period, it is strictly up to the staff and the pace in which the inmate is prepared and there is space in the program at the time.
https://www.inmateaid.com/ask-the-inmate/how-long-does-it-take-to-get-to-the-star-program-in-portsmouth-once-you-are-booked-in-ross-co-jail#answer
Accepted Answer Date Created: May 26,2019