Post History
I think if you have repeatedly and deliberately "worked together" at your request to create and answer various writing challenges then this is co-authoring. However, if you ran a couple of issues ...
Answer
#3: Attribution notice added
Source: https://writers.stackexchange.com/a/32830 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
I think if you have repeatedly and deliberately "worked together" at your request to create and answer various writing challenges then this is co-authoring. However, if you ran a couple of issues or ideas past someone whose opinion you trust and it was helpful then this is best handled as a thank you or acknowledgement.