How to configure MinimServer after install on QNAP

[z624391]

I read all kind of information but I cannot find out how I post configure certain options. I really cannot find System Tab's, etc.
I did:
- install MinimServer using QNAP App Center (not using MinimWatch);
- MinimServer is running and I already stream some music to my Linn;
- install MinumWatch under Windows 10 ending up gray (no server found) with no Server options available.

I like to convert FLAC to WAV by editing flac:wav to stream.transcode. Where can I find the System tab or the corresponding config files.

I only find this path "/share/CACHEDEV1_DATA/.qpkg/MinimServer/data" with minimserver.configure.