Had a job today which reminded me why I needed to use different offsets for same tool. I have a gang tooling plate which I sometimes mount and use in conjunction with the turret. Use this mainly for high volume jobs where every second matters to avoid wasting time on the turret indexing. So one tool is used from the turret and another two are from the gang tooling plate. In this instance the 3 tools are:
Since the tool is the same the turret doesn't rotate and allows only changing the offset for each tool.