The post is still valid. The PI Event Frame Generator is a PI Interface which generate event frame. I suggest have a look at this kb https://techsupport.osisoft.com/Troubleshooting/KB/KB01197 as it introduced ways to generate PI event frame.
You can also generate event frame by PI Analysis Service, but I don't think you can create child events.
I hope this help.
Hi Rickey and Lisaury,
PI Analysis can set multiple start triggers and can create child event frames too. (I know previous version of PI Analysis could not create child event frames)
See PI Live Library (Child event frame generation with multiple start triggers)
Thank you for the answers. I need hierarchical events, so I understand it is only possible if I use Event frame generator.