Bluesailor

Previously to V5 it was easy to modify infill parameters for parts of the model only. Now, when I use 'per Model settings' with a separate model only for infill parameters in 'Modify settings for overlaps' all of the Model and the separate model are affected. Also, when I try to add support blocker, I do not get the possibility to to add a support blocker object. Has the possibilities of V5 been reduced with the discarding of the now 'not supported extensions' in V5? Any Help will be appreciated.