The only way an inmate can gain a transfer is by having 6 - 18 months of perfect behavior. Each facility is different, have your inmate sit down with his counselor and set up some criteria to follow in order to get the transfer.
https://www.inmateaid.com/ask-the-inmate/what-are-the-qualifications-to-be-admitted-into-the-annex-facility.amp#answer
Accepted Answer Date Created: July 01,2016