Hi mir4ea, I'm sorry I don't understand this part at all:

> Working with styles from moi is very hard becouse I cannot assign one material to multiple objects <...>

But you can assign one material (style) in MoI to any number of objects you want, it's normal for many different objects which should share the same appearance to share the same material as well.

I don't understand why you don't want to use styles to control the appearance or materials of your models, that's one of the main reasons why styles exist in Moi in the first place...

- Michael