can someone explain to me chords and the appregiator to me?

I'm somewhat confused but does chord mean that jjosxl has a selection of in built midi chords which I can trigger for example in Ableton. Simply is the chord mode a chord generator?

Watching the videos doesn't make any sense to me.

Plus the app, how does that exactly work? I don't have a mpc so I can exactly test these features.

Yes you can set the pads to chords to send external midi or to a instrument program.
ARP is a arpeggiator with setting for timing,duration,and course/UP/DOWN/UPDOWN1/UPDOWN2.Also controlled by QLINK

cool so chord mode, how do I select say a c minor then pad 2 gmajor for example?.