Look at https://forums.autodesk.com/t5/fusio...c/td-p/5762926

Example

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In case you have problems accessing the Autodesk page, it answers the question "Where are the CPS files located on a Mac?", with "I would recommend using the personal post location /Users/<user id>/Autodesk/Fusion 360 CAM/Posts . This way IF they move the default folder you won’t have to search for where they move. Also if you’re using a modified post with the same name of a stock post it won’t get over written." - That advice attributed to a "Jeff Walters, Senior Support Engineer, CAM"