Use the preference panel to edit your document settings:

Check for updates at launch: Set iCash to look for new versions at start-up.
Transaction Auto-Completion: Activate/deactivate transaction auto-completion.
Account overdraw notification: Activate this option to get notified when overdrawing an account.
Change confirmation: Activate this option to be asked for a confirmation when editing an entry.
Deletion confirmation: Activate this option to be asked for a confirmation when deleting an entry.
Balance display in title: Select the account which balance will be displayed in the document status bar.
Number format: Set number format, thousand separator, currency, decimals number and currency position.