From Australian sf information
Amending 5.3 per 2013 BM
:5.1 Number of finalists: Normally, the five nominees receiving the most nominations shall appear on the final ballot. In the event of ties amongst these first five nominees, up to seven may appear. However, if such ties would result in more than seven nominees appearing, none of the nominees involved in the tie will appear.
:5.2 Minimum nominations for finalists: To appear on the ballot a finalist must attract a minimum of four nominations in the Professional and Best New Talent categories, or two in the Fan and other Special Awards category (the William Atheling Jr Award).
:5.3 Minimum finalists for categories: At the subcommittee’s discretion, in the event that there are fewer than four finalists in the Novella or Novelette and Short Story categories, these categories may be merged into a single category called Short Fiction
. :5.4 Appearance of finalists: Finalists shall be listed in randomised order. The content of listings is at the discretion of the committee.
:5.5 No Award: “No Award” shall appear last on the ballot for all categories.