Ok, no worries. I'll quickly explain why I asked for such thing. I use MoI for drafting and modeling architectural projects. I organize my file in 2D layers (walls, stairs, furniture..), 3D layers (3D walls, 3D stairs, 3D windows..), and then I group each floor plan (3D_Floor1, 2D_Floor1, 3D_Floor2, 2D_Floor2 and so on..). In this way I can use layers for further linework when exporting in cad (line weight, type and so on..), while having in MoI a clean file, allowing me to hide/show/lock the floor plans as I need. This is the best workflow I've come up with so far. So a sort of group-mode would come handy to me, allowing me to put new data in an existing group without having to assign the name every time.