Thanks for the prompt feedback @JĂșlia Mir đ. Yeah, I was thinking in one, but different files may also work. In that case I guess I will have to treat each row as "different" samples? I.e., give different sample name for each row, even though they are the same (same fastq files), or would giving them the same name would work?
Also, it seems like with the repeated version, the same fastq files need to be mapped e.g., 50 times, while in theory they could only be mapped once (to all target regions at once) and then extracted for downstream processes, that will probably be more efficient, but not sure đ.