How to book more than 6 legs on a Qantas Oneworld RTW redemption?

Frequent Flyer Programs
1

Hi,
Could I please have some advice with my RTW itinerary too please? All economy for myself and my daughter, we have just enough points.
On the QANTAS site I can get it to accept this:

  1. SYD - JFK (via Auckland) Stop 1
  2. JFK - MAD Stop 2
  3. HEL - RVN Stop 3
  4. RVN - HEL (transit < 24h)
  5. HEL - HKG Stop 4 (as it is 26h transit time)
  6. HKG - SYD (home)
    I can book this online, but I want to add 1 more stop (5 total) but get errors whenever I try and put in a leg between 2. and 3. even if I do it as a transit on the same day, e.g. DUB - HEL on same day as HEL - ROV. I was going to pay for a few cheap flights in Europe, e.g. Ryan air to make my way from MAD to preferably DUB (rather than HEL). Any suggestions welcome to add between MAD and HEL including London, Cork, Paris, Geneva.
    I want to get it right but don’t want to call if I am not confident in the rules.
    Thank you community, it has helped me so much!
    Julie
2

How about this as an option

  1. SYD - JFK (via Auckland) Stop 1
  2. JFK - MAD Stop 2
  3. MAD - HEL - RVN Stop 3
  4. RVN - HEL - HKG Stop 4
  5. HKG - SYD (home)

There is a maximum of 5 flight via the multi-city option on Qantas. Anything more than that, you’ll need to call them up to add flights.