How do you default Australian date format into the Zoho shee

How do you default Australian date format into the Zoho shee

Hi,

I would like the default date format to dd/mm/yyyy when creating new spreadsheets and to also be used in any spreadsheet I upload. It seems that my account preferences and locale information does not come across when I create a new spreadsheet or upload a spreadsheet.

Could someone please advise as to how this can be done.

Thanks in advance
sam