You can setup a system that runs multiple vdr daemons simultaneusly by doing
the following:
# cp /usr/share/doc/vdr/vdr2.service.sample /etc/systemd/system/vdr2.service
# cp /etc/sysconfig/vdr /etc/sysconfig/vdr2
and editing the files accordingly.

To set plugin parameters individually, you need to set them using
VDR_PLUGIN_ARGS_ in the instance sysconfig fie ("vdr2" above).

The extra VDR daemons will not be restarted automatically on upgrades.