this specific tutorial allows you to use STLs in carbide create pro, including all the features that that has. I don’t know exactly what you mean, but I’ve used it to do the kind of things in the pictures below…
if you have a more specific description of what you mean/want then there might be other options as well
(if you want to carve a pattern into an STL, that would fit into the Test cuts with the newly installed spindle bucket)