Manager - reuse subprocess in bpmn

Question:
How can I set up a sub-process in BPMN; which is used by multiple processes; so that it only needs to be maintained once?

Answer: In a BPMN collaboration chart you can drop a pool in the drawing and link it to the sub process.
See the following video for further explanation:
https://mavimsupport.blob.core.windows.net/kb-articles/KA-01609/BPMN.mp4