When using sabnzbd you can use series name as a category by utilizing set plugin. The category name will be exactly the one written in as a series name.
tasks:
my-feed:
.
.
series:
settings:
720p:
set:
category: '{{series_name}}'
720p:
- name a
- name b
sabnzbd:
key: 1234567890
url: http://127.0.0.1:8080/sabnzbd/api?