Processing chain for InSAR for ALOS PALSAR 1 & 2 in SNAP

Hello folks, a team in Peru is trying to learn the processing chain for ALOS PALSAR 1 & 2 INSAR. The instructions in the Interferometry tutorial don’t seem to be pertinent to this sensor. The STEP InSAR database alludes to potential limitations on the part of SNAP for ALOS INSAR. Can someone set us straight on how we should be approaching iNSAR with SNAP 3.0? Can you give me a link that has these steps laid out somewhere to follow like a cookbook?Thanks.