Starting QZ-Tray : barcode printing

Good day all

V13 ( latest )

Trying to get barcode printing going with a thermal printer

Got my customised print format sorted out ( think so)

It seems next step is to install QZ Tray. DId that. Installation went smooth.
When the install-scripty wanted to start QZ-TRay it said "skipped’ I have to start it manually.
I looked in /etc/init.d , but could not find a script called QZ-Tray … or something.

Can someone perhaps assist ? Thanks