Only had my s90xs a week and this turns out to be one of my disappointments.  I thought I’d find a guitar arp in 3/4, pretty standard (1, 2 and 3 and; (down, dn, up, dn,up)). 
For that matter, I was presuming many more 3/4 and 6/8 choices.

Any suggestions on the guitar 3/4 arp?

Thanks. this is my first post. what a fun learning curve :).