Control arrays: how do i change each index?

In the current IDE, I am noticing for the first time that the index number of each instance of a control array is not available in the inspector panel, as it used to be. Now I have cut and pasted some checkboxes, and i need to have each of their indexes match the index of the tabpanel on which they reside. But the IDE has “helpfully” incremented the index number each time I pasted!
How can I go in and change those index numbers to the way I need them?

Arrrgh. The Inspector panel has two tabs now. I hadn’t looked at that until now.

I’m not sure what to call it: the right-hand tab with the gear icon allows access to index, tab index, font etc.

…Found it!

I was fooled by that one too… Took me a while to find out.