How do I go about setting different libraries for different services to places other than "config" volume?

I'm using Kitematic to streamline the process and I've added such containers as Komga and Ubooquity to start. But, trying to point the libraries to the places I have stored, I'm finding I can't do. I can only point them where the volume is, and if I try and change that, it breaks the container and I have to reinstall.

Am I missing something? I tried bind mounting the directories, but that didn't seem to work.

submitted by /u/prodigalkal7
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Source: Reddit