Write custom action in Rule System (ActionManager)

I learned Introduction to Rule System Integration section, but my custom action not displayed in Action list in XProtect Management Client.

Where I can find samples of the using ActionManager?

I the upcoming MIP SDK we will have a new sample that uses this included. For now we have a separate download..

See - https://force.milestonesys.com/support/MccRedir?art=000001878&lang=en_US