I'm sure that's pretty simple, but I just can't do it. This is the pattern :

As you can see, this is a pinkyup down arpeggiator, (but this is not the point of my request) with a specific groove like 2 notes-nothing-2 notes-nothing etc
I tried using the groove 8/16/32...but it doesn't work.
Anyone can tell me how can I programm it using an arpeggiator?
Thanks!