You can do that with two processes. The first one prints most of the model, the second prints the last layers. However, you need to limit the processes by height, for instance you set the first process to print from 0 to 24.7 mm, then the second from 24.7 to 25 mm (if your model was 25 mm high). The processes are independent from each other, so you can change basically whatever setting you want, including the layer height.
S3D has an article about this too:
https://www.simplify3d.com/support/arti ... f-a-model/