I have no personal experience to answer with. I can only refer you to AFI 36-2210
. BA AFSC assignments to include join spouse assignments are made exactly the same as all other officer and enlisted assignments.
2.21. Join Spouse (Officer/Enlisted) PCS Considerations. Military couples consisting of an officer and enlisted member receive assignment consideration primarily based on the officerís utilization. For PCS considerations where both Airmen are officers or both are enlisted, utilization is determined on a case-by-case basis based on the needs of the AF. Exceptions may be considered on a case-by-case basis per paragraph 1.5.
also in play:
2.4. Primary PCS Selection Factor. The primary factor in selection of an Airman for PCS is the Airmanís qualifications to fill a valid manpower requirement and perform productively in the position for which being considered. PCS eligibility factors such as time on station (TOS) and so on, although important, are secondary. When Airmen with the required qualifications are identified, then PCS eligibility criteria and other factors will be considered. Volunteer status, individual preferences, humanitarian or special circumstances may be considered to the extent these factors are consistent with operational manning requirements. PCS is not authorized based solely on the fact an Airman can be used or prefers assignment elsewhere.
188.8.131.52. Enlisted personnel are selected to fill manpower requirement with the following grade/skill combinations: 184.108.40.206.1. CMSgts (E-9) for Chief Enlisted Manager (CEM) code positions. 220.127.116.11.2. SMSgts (E-8) for 9-level positions. 18.104.22.168.3. MSgt (E-7) and TSgt (E-6) for 7 level positions. 22.214.171.124.4. SSgt (E-5) and Senior Airman (SRA) for 5 level positions. 126.96.36.199.5. Airman First Class (A1C), Airman (Amn) and Airman Basic (AB) for 3 level positions.