In fact she seems to be using it at less opportune times now even when there are no poisons present. Sure she didn't always do that before -  not clear how the new instructions can override that as there aren't conditional options.

Should be able to set a premade cb team and tell her to never use it in CB?

For spider ive kept it simple i have set her up to open with poison rain, then catalyst, and in arena to open up with catalyst

Before any changes she always used catalyst even when no poisons applied.

I just tried the never use skill in CB, didn't work.  Maybe I did something wrong, I'll try again...

Did you check the box to the left of the team to make sure the team is actually selected? I missed that my first attempt, so I wasn't actually using the team preset and it just ran the same champions with their default behavior.

LOL, realized it on 3rd CB attempt.... Got it right on 1st try for spider :)

The "Team Setup" button seems to be highlighted in blue if a team is selected, as opposed to any random collection of champions, but it's not immediately obvious at a glance. Would be nice if the name of the team was displayed as well though, just to clarify (and in case you have multiple setups using the same champions with different behavior, I guess).