yep, just hold the step/trig and press COPY, hold another trig and hit PASTE. :joy:
you can also hold down multiple trigs and copy them.

but for repeating sounds, also try using the arpeggiator!
One trick is to set the note length for regular steps to a short value, shorter than the arp time.
If you enable the arp on the track, normal trigs will not be affected.
If you place a trig somewhere and turn the note length for that step up, only this step will be arpeggiated. This is awesome for snare rolls for example. (now if we get p-locks for the arp parameters this will get so much more flexible).