I think what he's trying to do is set it up like Whistler where you can search only a certain Audio Type. To answer that (if that's what you're asking), is a no.
No, there is no way to do a custom search to only pass traffic through from one voice protocol (exclusively NXDN/DMR/P25/PV or exclusively digital of any type). Would be a nice feature upgrade @JoeBearcat. My AOR AR DV10 can do it via custom search banks but that's to be expected for hundreds more than an SDS200