Dial in details

Hey @SusanC1, you will need the Audio Conferencing Add-On this will allow you to add Call Out, global Toll-free, and local dial-in for premium countries.

If you want just the dial in numbers to show and it doesnt need to be toll-free, then change the settings to the country you need.  https://support.zoom.us/hc/en-us/articles/115004454886-Specifying-Global-Dial-in-Countries-Regions

Just adding to the previous two answers, also make sure you have the Australia data center enabled (otherwise you will not see Australia dial-in numbers). More details in this support article: https://support.zoom.us/hc/en-us/articles/360054877391-Relationship-between-data-center-and-dial-in-from-call-to-countries