Thanks Amanda.
One clarification, perhaps what I’m missing is that from what I’m reading, usually the getCurrentItemIndex is triggered on event handlers (i.e. using repeaters). Which is not my case as I am not showing the list of all individuals on the waitlist, rather an input box for the user to type in the email, and then I match that email in the database to obtain the user’s ID (“_id”). Now I was hoping to pass that _id to get the index of the user in the dataset, but I’m limited only to getCurrentItemIndex.
So if there is no possible way of obtaining it that way, then I must revert to iterating through the list.