CAL up, CAL down, ALS request and CAL override. First 3 will be in Toucan for sure, hoping to add a CAL override button. Not sure if you can achieve what you need from those 4 things?
You can configure a specific CAL that is selected while CAL override is active. For example, an "overtake" button that temporarily increases boost compared to the usual CAL.
So anyhing you can set up in a dedicated CAL can be selected at the press of a button, regardless of which CAL you're currently running.