How to create an alternation between three or more notes in Dorico 3.5 (example picture below)

Dorico
1

alt

How can I produce a notation similar to the one above? I tried to find a way around it using trills with two auxiliary notes but even that I cannot arrive to produce is it possible?
the original idea however would be to replicate the kind of notation above. (indicate the alternation between the notes senza tempo as fas as possible and indicate rythm.
I hope i’m being clear enough.

thanks in advance!

2

Unfortunately it’s not particularly practical to show notation like your annotation above the staff in Dorico at the moment. The best you can probably do is to use a rhythmic cue from another instrument, since a rhythmic cue will be shown small and can be positioned at any staff position, without ledger lines. But you’ll need to add things like the brackets etc. separately.