(2018-04-09, 15:04)Milan Vančura Wrote: If you want to modify them in different way you have to break this link to the same submodel. Select one instance, click right mouse button and in the context menu select "Reorganize" -> "inline". All parts of this instance become a part of the main/current model. And they stay selected so you can even move them to another submodel then, if you wish.
Or copy the whole submodel into a new submodel and modify that one in order to create a new variant, you can do this using session/duplicate.
If you need two variants which are mostly identical consider splitting it into more parts/modules which you can then combine into the needed variants.