North Island Optionals

I'm heading over to do the northern highlights tour and have a question about optionals. I would like to do skydiving in Rotorua, i've done some homework and know that the company that run it in Queenstown also operate there but it's not on the list of optionals.

I've already done the southern scenic so i know that the 2 shorter tours join the grand explorer tour so i know that most people who want to skydive would do it in Queenstown. Just wondering if there is anyway i can organise to do it in Rotorua as i won't be travelling on to Queenstown???

Thanks