Modify multiple objects at the same time (f.ex.: 8) I'm still pretty new to blender but I was wondering if there was a function in Blender to  make the exact same changes to 8 or more objects which are on different positions later on.

For example. You have a room with 12 Pillars and you want to apply the same changes to those objects. How would one do this without making changes to one pillar and then have to copy paste the pillars to that exact same location over and over for each change.

Thank you in advance for any help or nodge into the right direction. I can give you picture to show my situation later if needed.
Objects can have the same object data. 





It introduces some constraints. Like if you what to have different materials for those objects, the materials should be linked to the object, not to the object data.