The autoname command works exactly as you want it to. For example; -beam/select all/autoname > names only beams. -column/select all/ axis/select all/ autoname > names only columns and axes. -tile/select all/ invert selection/ auto name > rename all but tile. - and even a few of the beams, a few of the slabs, a few of the columns and apply the autoname command and it will name only the objects you have selected. - let's go further: again select a few of the beams, a few of the floors, a few of the columns and apply the autoname command. In the dialog that appears at this time, give values such as K78 for beam names, D55 for slab, S90 for column. Naming will continue according to the values you provide. I think these will work for you.