Just look through each filter at the sky during the day. RGB will be obvious and much brighter than the NB filters. Oiii will be greeny/blue and darker than G or B. Ha will be red, darker than R. Sii will be a bit like Ha but darker. You can't go wrong ...
As far as the correct direction. I don't know about zwo filters but my baaders have a little arrow on the side. Maybe follow this?
https://www.cloudynights.com/topic/6...r-orientation/