Hello Grinsven,
Both DMX ports of the CueCore2 can be configured as input or output. On the settings page.
The content of the CueCore2 is saved in tracks. A track contains information about both universes. If you only want one universe of content in a track. You will have to make sure that all channels on the other universe are set to 0.
The when you play this track only one universe will get affected if you use the precedence HTP on the playback page.
Recording / creating content
You can record content from an external console on the track page. Or you can also use CueluxPro to create content and save it in the CueCore2. And the last option is the build in Console on the track page.
Best regards,
Guido Visser