In the roon library the albums are linked to different genres by default and you can manually add the album to an additional genre which is a good feature. I am using the focus feature to add genres and save them to a bookmark. Like I want to gather all Singer/Songwriter genres in one “fokus” and bookmark that.
The problem is that some genres are not listed and therefore cannot be included. One example is the genre “Singer/songwriter”. I find other genres that include “Singer/songwriter”, but not the one that is called just “Singer/songwriter”.
When I find an album that has the “Singer/songwriter” genre and click the genre I can see that I have 261 albums in my library. I can create a bookmark on that one, but the “Singer/songwriter” genre is not listed in the genre overview.
A screenshot might help others to understand your problem.
In Focus, if you click on the genres, a list of all genres currently in your library pops up. If the “Singer/Songwriter” genre is not present in this list, then no album has the “Singer/Songwriter” genre attached.
Update:
Hint: Use the 
to dive into sub-genres.
Hi, I just updated my post.
And again: A screenshot might help others to understand your problem.
What “Overview” (Focus, Genre browser) are you talking about?
Right, now I found the “Singer/Songwriter” genre below the “Pop/rock” genre. Thank you so much for the tip 
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