I wonder that.... is it possible to create Arpeggio in CDLC? Such as in EOF for example? If yes, how does it work?

it depends what kind of result do you want.

 

You have the arpeggios function in EOF that recreate the arpeggios indication in RS with the handshape and the little around the note.

 

There's also the handshape indication in EOF which is a bit simpler as it will only show the handshape with no other kind of things around which looks more like a standard chord.

 

Both of those are simply marking in EOF, you select a bunch of note and just mark them as an arpeggios/handshape. the problem is that handshape can't be combine with chords at the moment and arpggios indication tend to cluster a bit the screen so many people tend to avoid using that.