quick question on assignment overrides

[a_craik]

We need to create multiple assignments (via API) and assign each of these to a particular subset of students (who will be enrolled on one or more of several specific course sections).

Looking at the API documentation here https://canvas.instructure.com/doc/api/assignments.html#method.assignment_overrides.create it says "must identify an active section of the assignment's course not already targetted by a different override".

To me that reads like I can assign an assignment override to a particular section only once - if I tried to assign that section to another assignment override it would fail. But this doesn't seem right at all - I'm sure I could allocate multiple assignments to a particular section via the UI.

Am i just reading it wrong?

EDIT: 

I've tested this and been able to assign a section to more than one assignment as an override. So although I still don't understand the quote above from the API documentation, at least that works...

My new/next state of confusion relates to the "create assignment" call (https://canvas.instructure.com/doc/api/assignments.html#method.assignments_api.create) and the "assignment[assignment_overrides][]" parameter. How the heck do I use that to add a "List of overrides for the assignment"??? I've tried every variation of syntax I can think of but I can't get it to work 😢 

[a_craik]

just to add i am of course planning on setting up a test, just wanted to ask ahead if somebody already knows