Kibana paths configuration

Hello @mistic some questions about directories modified/added to at runtime by kibana. Please confirm, that based on [1]

- `config` and `plugings` are considered user-serviceable, meaning user can modify/add/remove content, correct?
- Is there a setting that I can change to point Kibana to read config file from somewhere else?
- `data` directory is written to by Kibana at runtime as well
- [2] lists `path.data` as a setting that can be modified to move data directory somewhere, yet this setting is not in the reference kibana.yml file.
- Is `optimize` also modified by Kibana at run-time?
- If above it true, is the a setting to move `optimize` directory somewhere else?

[1] https://www.elastic.co/guide/en/kibana/current/windows.html
[2] https://www.elastic.co/guide/en/kibana/current/settings.html