Wedgemen, just confirm that you have an account with commsec? The normal basic service, is not delayed info, but requires a refresh of your screen each time, whereas Iress is live data that obviously just keeps updating your viewing page.
So on that note, you have to add an EMA, see below for the selection. You can add numerous, but not recommended.
Then go to the top left pull down arrow and change the values to what you like on the EMA. 8 obviously.
20sma is automatic with BB's or just add another SMA, and ensure that the value is at 20.
The 30min chart is not available on the basic service, only Iress. However I have requested it from commsec and "they are considering it", as of a week ago.
Hope this helps? All the best.
(20min delay)