fairly new myself too, welcome

there are a few good threads on this already

best to think of the graphic arpeggiator page as an overlay to the other settings, the No2>4 parameters are faking a held chord (if you want)- what you can do with the mini keys is different to that which you can record (this applies to a few things, including legato)

i’m constantly amazed at the flexibility, but you have to keep exploring to find the potential and what works for you