multiwave bolus

I know that on the Combo once you have set a multiwave or extended bolus, if you then want to add in an extra bolus (eg for extra carbs added later) you only have access to a standard bolus. On the Insight is there the facility to stack and extended or multiwave on top of one already set?

Having read various posts about porridge, I am now reviewing my insulin delivery for this. I know that a lot of people on the forum avoid this but I like it too much to do that, so I feel that is worth me sorting this out if I can. I have previously used an multiwave (instant for honey...