If a plant consisting of several partial machines is being assembled, the instructions for use may also need to be revised. If it's simply a matter of adding an automatic infeed/outfeed (e.g. robot/handling), it may be enough to attach the instructions from the original instructions for use. This also depends on the complexity of the eventual plant when it is complete.
When several individual machines are combined to form an assembly of machines, DIN report 146 can be used as a guide when producing instructions for use.