Converting flow from 4/4 to Cut Time

Sure. Select the red time signature signpost, hit Enter, then replace the existing contents (4/4,1) with cutc,0.5 and hit Enter.

If you don’t like the beaming in the clave, go to Notation Options > Beam Grouping > Beams and Rests, and set Rests in beam groups to Break beams at rests.

If you find that the Notation Options don’t give you the control you need for cutc, you might find this workaround helpful: A workaround for persuading Dorico 3.5 to beam/group 2/2 like 4/4