Create work item programatically based on selection checkbox enumeration type.
Accepted answer
I've done things like this. As Ralph says you could do it with a participant (if the user that save the work-item can create other work items) or with event handlers if you want to use another user (like technical user) with the runAs method.
Comments
One other answer
This should be possible by creating a participant. It could e.g. on save or a state change create work items. See https://jazz.net/library/article/1000 for how to create and develop a participant. I try to provide hints about the API on http://rsjazz.wordpress.com although I have not written a server operational behavior to create work items, there are other hints that might be interesting.