FME Server custom transformer alternate location

It would be great if an alternate shared resource path for custom transformers could be implemented (with associated fine-grained security settings).

This idea is a duplicate of:

https://community.safe.com/s/bridea/a0r4Q00000FuTxPQAV/finer-control-over-fme-server-shared-resources-location-and-permissions

Re-posted to help with searches looking specifically for FME Server custom transformer configuration.