GAI 1028 AL6 does not mention Managed Path, it is purely RAFCARS. To qualify for RAFCARS you must be older than 32 and have a recognised exit date. Apply via the attached annex to manning.
2014DIN01-180 was released on 5 Sep and details the BA Managed Path Scheme. Here, you must be within 2 years of a recognised exit point and have 1500 hours on any service aircraft. Once you leave (not at point of applying) you must have a class 1 medical, at least EASA fATPL and an MCC. You can either apply to the scheme via the attached annex to manning or to BA directly during a recruitment period (like now!).
Hope that helps - I'm unable to upload any of the documents.