"RELATED TO THE SAME DEPRECIATION SCHEDULE BY NAME"

I'm not sure what you mean.  By name - does that mean by activity, say 2 or more Schedule Cs? If so, choose the activity on left side to ensure that the asset is linked to that activity.

have never needed to group this way. The printed forms group them.

Could you download it, put it in Excel, sort and group as desired, then import it back to LC?  

This can be done in ProFx. I don't know about LC.