Hi @Michel_Edward, you can insert in the TS Popover an aggregate 6/8:2/4 (notice the colon instead of pipe as separator, to not show the dotted barline separator. Here its birth), and then set in Notation Option the Break beams at beat for Eighth notes (quavers) in quarter note (crotchet) denominator time signatures to Break beams at beat boundaries (see screenshot). Then you need to hide the time signature strategically and copy it where needed (creating a normal 5/4 with forced beaming for the first bar when it occurs):
Edit: you can alternatively set in the popover 6/8:1/4:1/4 instead of changing the mentioned Notation Option.
Result:
Dorico file example:
5:4 as 3+3+2+2.dorico (526.0 KB)