The recommended way would be to use 6/8 as 2 beats of a 4/4 style.
Look at a style like ZZIRISH.sty (an old MIDI style). It is 4/4, with a triplet feel on each of the beats. So it is like 2 bars of 6/8.

Search the stylepicker for the phrase 6/8 or 12/8, and you'll find other examples.

Same with 12/8 = 4/4 (1 bar of 4/4 = 1 bar of 12/8)

9/8 = 3/4 (waltz time, with each beat having a triplet feel).


Have Fun!
Peter Gannon
PG Music Inc.