In case someone will search for this particular issue and come across this thread, here is the solution to what I wanted to achieve, described four posts above this.
To achieve dim./cresc.with hyphens – that is, abbreviated words for gradual dynamics followed by hyphens with different length and gaps from what is offered through the four available options in the properties panel:
Properties panel > Gradual style > cresc… .
Properties panel > Continuation line style > Dashed.
Now, I want longer dashes and longer gaps.
Engraving options > Dynamics > Gradual dynamics > Text with lines > Advanced options > increase the values in Dashed continuation lines > Dash length and Gap between dashes. In my case, values 1 and 5 respectively helped me achieve the appearance I needed for my engraving work.