KV28

Hello! I rarely turn to asking questions in forums, but after searching for options endlessly I have come to conclusion, that I have to. Q: Is there any way to set "Spiralize Outer Contour" to just one part of the model? Model consists of two parts - lower part has to be done as normal print, but the upper part of model could use a smooth outer shell with no seam. I was trying to find option using "Per Model Settings", but it seams that Spiralize option is not available for separate parts.