I need to change violin VST's in finale mid score.

I am doing a  Horror type piece at the moment and have very aggressive string VST's (marcato) However there is now a scene change where the piece becomes peaceful. I notated con sordino over the semibreves but the VST's just played a short note. Is there a way of switching VST sounds from Marcato to Lush strings at that point via the score using Finale or is this a thing I will have to do in a DAW?

What I would do is is a have another staff for the strings assigned to the VST you want and just notate on that staff when it gets to the part where you want those sounds.

Thanks bkho , looks like thats what I need to do. Its weird that they have not sorted out this problem as it messes up the notation and creates extra work.